mirror of
https://github.com/oven-sh/bun
synced 2026-02-10 10:58:56 +00:00
3279 lines
112 KiB
JavaScript
3279 lines
112 KiB
JavaScript
// Copyright Joyent, Inc. and other Node contributors.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to permit
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// persons to whom the Software is furnished to do so, subject to the
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// following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
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// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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// USE OR OTHER DEALINGS IN THE SOFTWARE.
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import assert from "assert";
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import { isWindows } from "harness";
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import util, { inspect } from "util";
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import vm from "vm";
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import { MessageChannel } from "worker_threads";
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const noop = () => {};
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const mustCallChecks = [];
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test("no assertion failures", () => {
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assert.strictEqual(util.inspect(1), "1");
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assert.strictEqual(util.inspect(false), "false");
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assert.strictEqual(util.inspect(""), "''");
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assert.strictEqual(util.inspect("hello"), "'hello'");
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assert.strictEqual(
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util.inspect(function abc() {}),
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"[Function: abc]",
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);
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assert.strictEqual(
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util.inspect(() => {}),
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"[Function (anonymous)]",
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);
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assert.strictEqual(
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util.inspect(async function () {}),
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"[AsyncFunction (anonymous)]",
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);
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assert.strictEqual(
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util.inspect(async () => {}),
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"[AsyncFunction (anonymous)]",
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);
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// Special function inspection.
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{
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const fn = (() => function* () {})();
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assert.strictEqual(util.inspect(fn), "[GeneratorFunction (anonymous)]");
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assert.strictEqual(
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util.inspect(async function* abc() {}),
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"[AsyncGeneratorFunction: abc]",
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);
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Object.setPrototypeOf(
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fn,
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Object.getPrototypeOf(async () => {}),
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);
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//! Note:
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// The following tests are relying on the JS-based is(Async|Generator)Function polyfills,
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// when switching them out back for the native implementation make sure they are fixed!
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// Due to the bug with the native impl. being flaky make sure its tested multiple times.
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assert.strictEqual(util.inspect(fn), "[GeneratorFunction (anonymous)] AsyncFunction");
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Object.defineProperty(fn, "name", { value: 5, configurable: true });
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assert.strictEqual(util.inspect(fn), "[GeneratorFunction: 5] AsyncFunction");
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Object.defineProperty(fn, Symbol.toStringTag, {
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value: "Foobar",
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configurable: true,
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});
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assert.strictEqual(util.inspect({ ["5"]: fn }), "{ '5': [GeneratorFunction: 5] AsyncFunction [Foobar] }");
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Object.defineProperty(fn, "name", { value: "5", configurable: true });
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Object.setPrototypeOf(fn, null);
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assert.strictEqual(util.inspect(fn), "[GeneratorFunction (null prototype): 5] [Foobar]");
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assert.strictEqual(util.inspect({ ["5"]: fn }), "{ '5': [GeneratorFunction (null prototype): 5] [Foobar] }");
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}
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assert.strictEqual(util.inspect(undefined), "undefined");
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assert.strictEqual(util.inspect(null), "null");
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assert.strictEqual(util.inspect(/foo(bar\n)?/gi), "/foo(bar\\n)?/gi");
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assert.strictEqual(
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util.inspect(new Date("Sun, 14 Feb 2010 11:48:40 GMT")),
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new Date("2010-02-14T12:48:40+01:00").toISOString(),
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);
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assert.strictEqual(util.inspect(new Date("")), new Date("").toString());
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assert.strictEqual(util.inspect("\n\x01"), "'\\n\\x01'");
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assert.strictEqual(
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util.inspect(`${Array(75).fill(1)}'\n\x1d\n\x03\x85\x7f\x7e\x9f\xa0`),
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`"${Array(75).fill(1)}'\\n" +\n '\\x1D\\n' +\n '\\x03\\x85\\x7F~\\x9F '`,
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);
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assert.strictEqual(util.inspect([]), "[]");
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assert.strictEqual(util.inspect({ __proto__: [] }), "Array {}");
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assert.strictEqual(util.inspect([1, 2]), "[ 1, 2 ]");
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assert.strictEqual(util.inspect([1, [2, 3]]), "[ 1, [ 2, 3 ] ]");
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assert.strictEqual(util.inspect({}), "{}");
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assert.strictEqual(util.inspect({ a: 1 }), "{ a: 1 }");
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assert.strictEqual(util.inspect({ a: function () {} }), "{ a: [Function: a] }");
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assert.strictEqual(util.inspect({ a: () => {} }), "{ a: [Function: a] }");
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assert.strictEqual(util.inspect({ a: async function abc() {} }), "{ a: [AsyncFunction: abc] }");
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assert.strictEqual(util.inspect({ a: async () => {} }), "{ a: [AsyncFunction: a] }");
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assert.strictEqual(util.inspect({ a: function* () {} }), "{ a: [GeneratorFunction: a] }");
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assert.strictEqual(util.inspect({ a: 1, b: 2 }), "{ a: 1, b: 2 }");
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assert.strictEqual(util.inspect({ "a": {} }), "{ a: {} }");
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assert.strictEqual(util.inspect({ "a": { "b": 2 } }), "{ a: { b: 2 } }");
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assert.strictEqual(util.inspect({ "a": { "b": { "c": { "d": 2 } } } }), "{ a: { b: { c: [Object] } } }");
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assert.strictEqual(
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util.inspect({ "a": { "b": { "c": { "d": 2 } } } }, false, null),
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"{\n a: { b: { c: { d: 2 } } }\n}",
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);
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assert.strictEqual(util.inspect([1, 2, 3], true), "[ 1, 2, 3, [length]: 3 ]");
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assert.strictEqual(util.inspect({ "a": { "b": { "c": 2 } } }, false, 0), "{ a: [Object] }");
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assert.strictEqual(util.inspect({ "a": { "b": { "c": 2 } } }, false, 1), "{ a: { b: [Object] } }");
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assert.strictEqual(util.inspect({ "a": { "b": ["c"] } }, false, 1), "{ a: { b: [Array] } }");
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assert.strictEqual(util.inspect(new Uint8Array(0)), "Uint8Array(0) []");
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assert(inspect(new Uint8Array(0), { showHidden: true }).includes("[buffer]"));
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assert.strictEqual(
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util.inspect(Object.create({}, { visible: { value: 1, enumerable: true }, hidden: { value: 2 } })),
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"{ visible: 1 }",
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);
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assert.strictEqual(
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util.inspect(Object.assign(new String("hello"), { [Symbol("foo")]: 123 }), { showHidden: true }),
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"[String: 'hello'] { [length]: 5, [Symbol(foo)]: 123 }",
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);
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{
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const regexp = /regexp/;
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regexp.aprop = 42;
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assert.strictEqual(util.inspect({ a: regexp }, false, 0), "{ a: /regexp/ }");
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}
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assert.match(util.inspect({ a: { a: { a: { a: {} } } } }, undefined, undefined, true), /Object/);
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assert.doesNotMatch(util.inspect({ a: { a: { a: { a: {} } } } }, undefined, null, true), /Object/);
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{
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const showHidden = true;
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const ab = new Uint8Array([1, 2, 3, 4]).buffer;
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const dv = new DataView(ab, 1, 2);
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assert.strictEqual(util.inspect(ab, showHidden), "ArrayBuffer { [Uint8Contents]: <01 02 03 04>, byteLength: 4 }");
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assert.strictEqual(
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util.inspect(new DataView(ab, 1, 2), showHidden),
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"DataView {\n" +
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" byteLength: 2,\n" +
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" byteOffset: 1,\n" +
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" buffer: ArrayBuffer {" +
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" [Uint8Contents]: <01 02 03 04>, byteLength: 4 }\n}",
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);
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assert.strictEqual(util.inspect(ab, showHidden), "ArrayBuffer { [Uint8Contents]: <01 02 03 04>, byteLength: 4 }");
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assert.strictEqual(
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util.inspect(dv, showHidden),
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"DataView {\n" +
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" byteLength: 2,\n" +
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" byteOffset: 1,\n" +
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" buffer: ArrayBuffer { [Uint8Contents]: " +
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"<01 02 03 04>, byteLength: 4 }\n}",
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);
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ab.x = 42;
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dv.y = 1337;
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assert.strictEqual(
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util.inspect(ab, showHidden),
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"ArrayBuffer { [Uint8Contents]: <01 02 03 04>, " + "byteLength: 4, x: 42 }",
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);
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assert.strictEqual(
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util.inspect(dv, showHidden),
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"DataView {\n" +
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" byteLength: 2,\n" +
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" byteOffset: 1,\n" +
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" buffer: ArrayBuffer { [Uint8Contents]: <01 02 03 04>," +
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" byteLength: 4, x: 42 },\n" +
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" y: 1337\n}",
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);
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}
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{
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const ab = new ArrayBuffer(42);
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assert.strictEqual(ab.byteLength, 42);
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new MessageChannel().port1.postMessage(ab, [ab]);
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assert.strictEqual(ab.byteLength, 0);
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assert.strictEqual(util.inspect(ab), "ArrayBuffer { (detached), byteLength: 0 }");
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}
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// Truncate output for ArrayBuffers using plural or singular bytes
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{
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const ab = new ArrayBuffer(3);
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assert.strictEqual(
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util.inspect(ab, { showHidden: true, maxArrayLength: 2 }),
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"ArrayBuffer { [Uint8Contents]" + ": <00 00 ... 1 more byte>, byteLength: 3 }",
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);
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assert.strictEqual(
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util.inspect(ab, { showHidden: true, maxArrayLength: 1 }),
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"ArrayBuffer { [Uint8Contents]" + ": <00 ... 2 more bytes>, byteLength: 3 }",
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);
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}
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});
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// Now do the same checks but from a different context.
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test("inspect from a different context", () => {
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const showHidden = false;
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const ab = vm.runInNewContext("new ArrayBuffer(4)");
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const dv = vm.runInNewContext("new DataView(ab, 1, 2)", { ab });
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assert.strictEqual(util.inspect(ab, showHidden), "ArrayBuffer { [Uint8Contents]: <00 00 00 00>, byteLength: 4 }");
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assert.strictEqual(
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util.inspect(new DataView(ab, 1, 2), showHidden),
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"DataView {\n" +
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" byteLength: 2,\n" +
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" byteOffset: 1,\n" +
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" buffer: ArrayBuffer { [Uint8Contents]: <00 00 00 00>, byteLength: 4 }\n}",
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);
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assert.strictEqual(util.inspect(ab, showHidden), "ArrayBuffer { [Uint8Contents]: <00 00 00 00>, byteLength: 4 }");
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//! segfaults
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/*assert.strictEqual(
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util.inspect(dv, showHidden),
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'DataView {\n' +
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' byteLength: 2,\n' +
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' byteOffset: 1,\n' +
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' buffer: ArrayBuffer { [Uint8Contents]: <00 00 00 00>, byteLength: 4 }\n}'
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);*/
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ab.x = 42;
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dv.y = 1337;
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assert.strictEqual(
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util.inspect(ab, showHidden),
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"ArrayBuffer { [Uint8Contents]: <00 00 00 00>, byteLength: 4, x: 42 }",
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);
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//! segfaults
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/*assert.strictEqual(
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util.inspect(dv, showHidden),
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'DataView {\n' +
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' byteLength: 2,\n' +
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' byteOffset: 1,\n' +
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' buffer: ArrayBuffer { [Uint8Contents]: <00 00 00 00>, byteLength: 4, x: 42 },\n' +
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' y: 1337\n}'
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);*/
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});
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test("no assertion failures 2", () => {
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[
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Float16Array,
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Float32Array,
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Float64Array,
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Int16Array,
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Int32Array,
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Int8Array,
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Uint16Array,
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Uint32Array,
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Uint8Array,
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Uint8ClampedArray,
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].forEach(constructor => {
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const length = 2;
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const byteLength = length * constructor.BYTES_PER_ELEMENT;
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const array = new constructor(new ArrayBuffer(byteLength), 0, length);
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array[0] = 65;
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array[1] = 97;
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assert.strictEqual(
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util.inspect(array, { showHidden: true }),
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`${constructor.name}(${length}) [\n` +
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" 65,\n" +
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" 97,\n" +
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` [BYTES_PER_ELEMENT]: ${constructor.BYTES_PER_ELEMENT},\n` +
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` [length]: ${length},\n` +
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` [byteLength]: ${byteLength},\n` +
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" [byteOffset]: 0,\n" +
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` [buffer]: ArrayBuffer { byteLength: ${byteLength} }\n]`,
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);
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assert.strictEqual(util.inspect(array, false), `${constructor.name}(${length}) [ 65, 97 ]`);
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});
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// Now check that declaring a TypedArray in a different context works the same.
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[
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Float16Array,
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Float32Array,
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Float64Array,
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Int16Array,
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Int32Array,
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Int8Array,
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Uint16Array,
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Uint32Array,
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Uint8Array,
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Uint8ClampedArray,
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].forEach(constructor => {
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const length = 2;
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const byteLength = length * constructor.BYTES_PER_ELEMENT;
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const array = vm.runInNewContext("new constructor(new ArrayBuffer(byteLength), 0, length)", {
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constructor,
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byteLength,
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length,
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});
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array[0] = 65;
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array[1] = 97;
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assert.strictEqual(
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util.inspect(array, true),
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`${constructor.name}(${length}) [\n` +
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" 65,\n" +
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" 97,\n" +
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` [BYTES_PER_ELEMENT]: ${constructor.BYTES_PER_ELEMENT},\n` +
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` [length]: ${length},\n` +
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` [byteLength]: ${byteLength},\n` +
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" [byteOffset]: 0,\n" +
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` [buffer]: ArrayBuffer { byteLength: ${byteLength} }\n]`,
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);
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assert.strictEqual(util.inspect(array, false), `${constructor.name}(${length}) [ 65, 97 ]`);
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});
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{
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const brokenLength = new Float32Array(2);
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Object.defineProperty(brokenLength, "length", { value: -1 });
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assert.strictEqual(inspect(brokenLength), "Float32Array(2) [ 0n, 0n ]");
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}
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assert.strictEqual(
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util.inspect(
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Object.create(
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{},
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{
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visible: { value: 1, enumerable: true },
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hidden: { value: 2 },
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},
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),
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{ showHidden: true },
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),
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"{ visible: 1, [hidden]: 2 }",
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);
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// Objects without prototype.
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assert.strictEqual(
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util.inspect(
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Object.create(null, {
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name: { value: "Tim", enumerable: true },
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hidden: { value: "secret" },
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}),
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{ showHidden: true },
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),
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"[Object: null prototype] { name: 'Tim', [hidden]: 'secret' }",
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);
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assert.strictEqual(
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util.inspect(
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Object.create(null, {
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name: { value: "Tim", enumerable: true },
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hidden: { value: "secret" },
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}),
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),
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"[Object: null prototype] { name: 'Tim' }",
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);
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||
|
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// Dynamic properties.
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{
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assert.strictEqual(
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util.inspect({
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get readonly() {
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return 1;
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},
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}),
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"{ readonly: [Getter] }",
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||
);
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||
|
||
assert.strictEqual(
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util.inspect({
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get readwrite() {
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return 1;
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},
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||
set readwrite(val) {},
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||
}),
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||
"{ readwrite: [Getter/Setter] }",
|
||
);
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||
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assert.strictEqual(util.inspect({ set writeonly(val) {} }), "{ writeonly: [Setter] }");
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||
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const value = {};
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value.a = value;
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assert.strictEqual(util.inspect(value), "<ref *1> { a: [Circular *1] }");
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const getterFn = {
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||
get one() {
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return null;
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},
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||
};
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assert.strictEqual(util.inspect(getterFn, { getters: true }), "{ one: [Getter: null] }");
|
||
}
|
||
|
||
// Array with dynamic properties.
|
||
{
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||
const value = [1, 2, 3];
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||
Object.defineProperty(value, "growingLength", {
|
||
enumerable: true,
|
||
get: function () {
|
||
this.push(true);
|
||
return this.length;
|
||
},
|
||
});
|
||
Object.defineProperty(value, "-1", {
|
||
enumerable: true,
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||
value: -1,
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||
});
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||
assert.strictEqual(util.inspect(value), "[ 1, 2, 3, growingLength: [Getter], '-1': -1 ]");
|
||
}
|
||
|
||
// Array with inherited number properties.
|
||
{
|
||
class CustomArray extends Array {}
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||
CustomArray.prototype[5] = "foo";
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||
CustomArray.prototype[49] = "bar";
|
||
CustomArray.prototype.foo = true;
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||
const arr = new CustomArray(50);
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||
arr[49] = "I win";
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||
assert.strictEqual(util.inspect(arr), "CustomArray(50) [ <49 empty items>, 'I win' ]");
|
||
assert.strictEqual(
|
||
util.inspect(arr, { showHidden: true }),
|
||
"CustomArray(50) [\n" +
|
||
" <49 empty items>,\n" +
|
||
" 'I win',\n" +
|
||
" [length]: 50,\n" +
|
||
" '5': 'foo',\n" +
|
||
" foo: true\n" +
|
||
"]",
|
||
);
|
||
}
|
||
|
||
// Array with extra properties.
|
||
{
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||
const arr = [1, 2, 3, ,];
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||
arr.foo = "bar";
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||
assert.strictEqual(util.inspect(arr), "[ 1, 2, 3, <1 empty item>, foo: 'bar' ]");
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||
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||
const arr2 = [];
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||
assert.strictEqual(util.inspect([], { showHidden: true }), "[ [length]: 0 ]");
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||
arr2["00"] = 1;
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||
assert.strictEqual(util.inspect(arr2), "[ '00': 1 ]");
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||
assert.strictEqual(util.inspect(arr2, { showHidden: true }), "[ [length]: 0, '00': 1 ]");
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||
arr2[1] = 0;
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||
assert.strictEqual(util.inspect(arr2), "[ <1 empty item>, 0, '00': 1 ]");
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||
assert.strictEqual(util.inspect(arr2, { showHidden: true }), "[ <1 empty item>, 0, [length]: 2, '00': 1 ]");
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||
delete arr2[1];
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||
assert.strictEqual(util.inspect(arr2), "[ <2 empty items>, '00': 1 ]");
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||
assert.strictEqual(util.inspect(arr2, { showHidden: true }), "[ <2 empty items>, [length]: 2, '00': 1 ]");
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||
arr2["01"] = 2;
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||
assert.strictEqual(util.inspect(arr2), "[ <2 empty items>, '00': 1, '01': 2 ]");
|
||
assert.strictEqual(util.inspect(arr2, { showHidden: true }), "[ <2 empty items>, [length]: 2, '00': 1, '01': 2 ]");
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||
delete arr2["00"];
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||
arr2[0] = 0;
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||
assert.strictEqual(util.inspect(arr2), "[ 0, <1 empty item>, '01': 2 ]");
|
||
assert.strictEqual(util.inspect(arr2, { showHidden: true }), "[ 0, <1 empty item>, [length]: 2, '01': 2 ]");
|
||
delete arr2["01"];
|
||
arr2[2 ** 32 - 2] = "max";
|
||
arr2[2 ** 32 - 1] = "too far";
|
||
assert.strictEqual(util.inspect(arr2), "[ 0, <4294967293 empty items>, 'max', '4294967295': 'too far' ]");
|
||
|
||
const arr3 = [];
|
||
arr3[-1] = -1;
|
||
assert.strictEqual(util.inspect(arr3), "[ '-1': -1 ]");
|
||
}
|
||
|
||
// Indices out of bounds.
|
||
{
|
||
const arr = [];
|
||
arr[2 ** 32] = true; // Not a valid array index.
|
||
assert.strictEqual(util.inspect(arr), "[ '4294967296': true ]");
|
||
arr[0] = true;
|
||
arr[10] = true;
|
||
assert.strictEqual(util.inspect(arr), "[ true, <9 empty items>, true, '4294967296': true ]");
|
||
arr[2 ** 32 - 2] = true;
|
||
arr[2 ** 32 - 1] = true;
|
||
arr[2 ** 32 + 1] = true;
|
||
delete arr[0];
|
||
delete arr[10];
|
||
assert.strictEqual(
|
||
util.inspect(arr),
|
||
[
|
||
"[",
|
||
"<4294967294 empty items>,",
|
||
"true,",
|
||
"'4294967296': true,",
|
||
"'4294967295': true,",
|
||
"'4294967297': true\n]",
|
||
].join("\n "),
|
||
);
|
||
}
|
||
|
||
// Function with properties.
|
||
{
|
||
const value = () => {};
|
||
value.aprop = 42;
|
||
assert.strictEqual(util.inspect(value), "[Function: value] { aprop: 42 }");
|
||
}
|
||
|
||
// Anonymous function with properties.
|
||
{
|
||
const value = (() => function () {})();
|
||
value.aprop = 42;
|
||
assert.strictEqual(util.inspect(value), "[Function (anonymous)] { aprop: 42 }");
|
||
}
|
||
|
||
// Regular expressions with properties.
|
||
{
|
||
const value = /123/gi;
|
||
value.aprop = 42;
|
||
assert.strictEqual(util.inspect(value), "/123/gi { aprop: 42 }");
|
||
}
|
||
|
||
// Dates with properties.
|
||
{
|
||
const value = new Date("Sun, 14 Feb 2010 11:48:40 GMT");
|
||
value.aprop = 42;
|
||
assert.strictEqual(util.inspect(value), "2010-02-14T11:48:40.000Z { aprop: 42 }");
|
||
}
|
||
|
||
// Test the internal isDate implementation.
|
||
{
|
||
const Date2 = vm.runInNewContext("Date");
|
||
const d = new Date2();
|
||
const orig = util.inspect(d);
|
||
Date2.prototype.foo = "bar";
|
||
const after = util.inspect(d);
|
||
assert.strictEqual(orig, after);
|
||
}
|
||
|
||
// Test positive/negative zero.
|
||
assert.strictEqual(util.inspect(0), "0");
|
||
assert.strictEqual(util.inspect(-0), "-0");
|
||
// Edge case from check.
|
||
assert.strictEqual(util.inspect(-5e-324), "-5e-324");
|
||
|
||
// Test for sparse array.
|
||
{
|
||
const a = ["foo", "bar", "baz"];
|
||
assert.strictEqual(util.inspect(a), "[ 'foo', 'bar', 'baz' ]");
|
||
delete a[1];
|
||
assert.strictEqual(util.inspect(a), "[ 'foo', <1 empty item>, 'baz' ]");
|
||
assert.strictEqual(util.inspect(a, true), "[ 'foo', <1 empty item>, 'baz', [length]: 3 ]");
|
||
assert.strictEqual(util.inspect(new Array(5)), "[ <5 empty items> ]");
|
||
a[3] = "bar";
|
||
a[100] = "qux";
|
||
assert.strictEqual(
|
||
util.inspect(a, { breakLength: Infinity }),
|
||
"[ 'foo', <1 empty item>, 'baz', 'bar', <96 empty items>, 'qux' ]",
|
||
);
|
||
delete a[3];
|
||
assert.strictEqual(
|
||
util.inspect(a, { maxArrayLength: 4 }),
|
||
"[ 'foo', <1 empty item>, 'baz', <97 empty items>, ... 1 more item ]",
|
||
);
|
||
// test 4 special case
|
||
assert.strictEqual(
|
||
util.inspect(a, {
|
||
maxArrayLength: 2,
|
||
}),
|
||
"[ 'foo', <1 empty item>, ... 99 more items ]",
|
||
);
|
||
}
|
||
|
||
// Test for other constructors in different context.
|
||
{
|
||
let obj = vm.runInNewContext("(function(){return {}})()", {});
|
||
assert.strictEqual(util.inspect(obj), "{}");
|
||
obj = vm.runInNewContext("const m=new Map();m.set(1,2);m", {});
|
||
assert.strictEqual(util.inspect(obj), "Map(1) { 1 => 2 }");
|
||
obj = vm.runInNewContext("const s=new Set();s.add(1);s.add(2);s", {});
|
||
assert.strictEqual(util.inspect(obj), "Set(2) { 1, 2 }");
|
||
obj = vm.runInNewContext("fn=function(){};new Promise(fn,fn)", {});
|
||
assert.strictEqual(util.inspect(obj), "Promise { <pending> }");
|
||
}
|
||
|
||
// Test for property descriptors.
|
||
{
|
||
const getter = Object.create(null, {
|
||
a: {
|
||
get: function () {
|
||
return "aaa";
|
||
},
|
||
},
|
||
});
|
||
const setter = Object.create(null, {
|
||
b: {
|
||
set: function () {},
|
||
},
|
||
});
|
||
const getterAndSetter = Object.create(null, {
|
||
c: {
|
||
get: function () {
|
||
return "ccc";
|
||
},
|
||
set: function () {},
|
||
},
|
||
});
|
||
assert.strictEqual(util.inspect(getter, true), "[Object: null prototype] { [a]: [Getter] }");
|
||
assert.strictEqual(util.inspect(setter, true), "[Object: null prototype] { [b]: [Setter] }");
|
||
assert.strictEqual(util.inspect(getterAndSetter, true), "[Object: null prototype] { [c]: [Getter/Setter] }");
|
||
}
|
||
|
||
// Exceptions should print the error message, not '{}'.
|
||
{
|
||
[new Error(), new Error("FAIL"), new TypeError("FAIL"), new SyntaxError("FAIL")].forEach(err => {
|
||
assert(
|
||
//! temp bug workaround with replace()'s
|
||
util.inspect(err).startsWith(err.stack.replace(/^Error: /, err.message ? "$&" : "Error")),
|
||
`Expected "${util.inspect(err)}" to start with "${err.stack.replace(
|
||
/^Error: /,
|
||
err.message ? "$&" : "Error",
|
||
)}"`,
|
||
);
|
||
});
|
||
|
||
assert.throws(
|
||
() => undef(),
|
||
e => {
|
||
assert(util.inspect(e).startsWith(e.stack), `Expected "${util.inspect(e)}" to start with "${e.stack}"`);
|
||
return true;
|
||
},
|
||
);
|
||
|
||
const ex = util.inspect(new Error("FAIL"), true);
|
||
assert(ex.includes("Error: FAIL"));
|
||
assert(ex.includes("[stack]"));
|
||
assert(ex.includes("[message]"));
|
||
}
|
||
|
||
{
|
||
const falsyCause1 = new Error("", { cause: false });
|
||
delete falsyCause1.stack;
|
||
const falsyCause2 = new Error(undefined, { cause: null });
|
||
falsyCause2.stack = "";
|
||
const undefinedCause = new Error("", { cause: undefined });
|
||
undefinedCause.stack = "";
|
||
|
||
assert.match(util.inspect(falsyCause1), /^\[Error\] \{ .*\[cause\]: false.* \}$/);
|
||
assert.match(util.inspect(falsyCause2), /^\[Error\] \{ .*\[cause\]: null.* \}$/);
|
||
assert.match(util.inspect(undefinedCause), /^\[Error\] \{ .*\[cause\]: undefined.* \}$/);
|
||
}
|
||
|
||
{
|
||
const tmp = Error.stackTraceLimit;
|
||
Error.stackTraceLimit = 0;
|
||
const err = new Error("foo");
|
||
const err2 = new Error("foo\nbar");
|
||
assert.strictEqual(util.inspect(err, { compact: true }), "[Error: foo]");
|
||
//assert(err.stack); //! skipped test, broken in bun
|
||
delete err.stack;
|
||
assert(!err.stack);
|
||
assert.strictEqual(util.inspect(err, { compact: true }), "[Error: foo]");
|
||
assert.strictEqual(util.inspect(err2, { compact: true }), "[Error: foo\nbar]");
|
||
|
||
err.bar = true;
|
||
err2.bar = true;
|
||
|
||
assert.strictEqual(util.inspect(err, { compact: true }), "{ [Error: foo] bar: true }");
|
||
assert.strictEqual(util.inspect(err2, { compact: true }), "{ [Error: foo\nbar]\n bar: true }");
|
||
assert.strictEqual(util.inspect(err, { compact: true, breakLength: 5 }), "{ [Error: foo]\n bar: true }");
|
||
assert.strictEqual(util.inspect(err, { compact: true, breakLength: 1 }), "{ [Error: foo]\n bar:\n true }");
|
||
assert.strictEqual(util.inspect(err2, { compact: true, breakLength: 5 }), "{ [Error: foo\nbar]\n bar: true }");
|
||
assert.strictEqual(util.inspect(err, { compact: false }), "[Error: foo] {\n bar: true\n}");
|
||
assert.strictEqual(util.inspect(err2, { compact: false }), "[Error: foo\nbar] {\n bar: true\n}");
|
||
|
||
Error.stackTraceLimit = tmp;
|
||
}
|
||
|
||
// Prevent non-enumerable error properties from being printed.
|
||
{
|
||
// TODO(bun): Make originalLine and originalColumn non-enumerable
|
||
let err = new Error();
|
||
err.message = "foobar";
|
||
let out = util
|
||
.inspect(err)
|
||
.replace(/\{\s*originalLine: .+\s*originalColumn: .+\s*\}/, "")
|
||
.trim()
|
||
.split("\n");
|
||
assert.strictEqual(out[0], "Error: foobar");
|
||
assert(out.at(-1).startsWith(" at "), 'Expected "' + out.at(-1) + '" to start with " at "');
|
||
// Reset the error, the stack is otherwise not recreated.
|
||
err = new Error();
|
||
err.message = "foobar";
|
||
err.name = "Unique";
|
||
Object.defineProperty(err, "stack", { value: err.stack, enumerable: true });
|
||
out = util
|
||
.inspect(err)
|
||
.replace(/\{\s*originalLine: .+\s*originalColumn: .+\s*\}/, "")
|
||
.trim()
|
||
.split("\n");
|
||
assert.strictEqual(out[0], "Unique: foobar");
|
||
assert(out.at(-1).startsWith(" at "), 'Expected "' + out.at(-1) + '" to start with " at "');
|
||
err.name = "Baz";
|
||
out = util
|
||
.inspect(err)
|
||
.replace(/\n\s*originalLine: .+\s*originalColumn: .+/, "")
|
||
.trim()
|
||
.split("\n");
|
||
assert.strictEqual(out[0], "Unique: foobar");
|
||
assert.strictEqual(out.at(-2), " name: 'Baz',");
|
||
assert.strictEqual(out.at(-1), "}");
|
||
}
|
||
|
||
// Doesn't capture stack trace.
|
||
{
|
||
function BadCustomError(msg) {
|
||
Error.call(this);
|
||
Object.defineProperty(this, "message", { value: msg, enumerable: false });
|
||
Object.defineProperty(this, "name", { value: "BadCustomError", enumerable: false });
|
||
}
|
||
Object.setPrototypeOf(BadCustomError.prototype, Error.prototype);
|
||
Object.setPrototypeOf(BadCustomError, Error);
|
||
assert.strictEqual(util.inspect(new BadCustomError("foo")), "[BadCustomError: foo]");
|
||
}
|
||
|
||
// Tampered error stack or name property (different type than string).
|
||
// Note: Symbols are not supported by `Error#toString()` which is called by accessing the `stack` property.
|
||
// TODO: Node 20+ changed how it handles the these cases, we should update to match such behavior.
|
||
// It should now preserve the original name and display the user-defined one as an extra property.
|
||
[
|
||
[404, "404: foo", "[404]"],
|
||
[0, "0: foo", "[RangeError: foo]"],
|
||
[0n, "0: foo", "[RangeError: foo]"],
|
||
[null, "null: foo", "[RangeError: foo]"],
|
||
//[undefined, 'RangeError: foo', '[RangeError: foo]'],
|
||
[false, "false: foo", "[RangeError: foo]"],
|
||
["", "foo", "[RangeError: foo]"],
|
||
//[[1, 2, 3], '1,2,3: foo', '[1,2,3]'],
|
||
].forEach(([value, outputStart, stack]) => {
|
||
let err = new RangeError("foo");
|
||
err.name = value;
|
||
assert(
|
||
util.inspect(err).startsWith(outputStart),
|
||
util.format(
|
||
'The name set to %o did not result in the expected output "%s", received "%s"',
|
||
value,
|
||
outputStart,
|
||
util.inspect(err).split("\n")[0],
|
||
),
|
||
);
|
||
|
||
err = new RangeError("foo");
|
||
err.stack = value;
|
||
assert.strictEqual(util.inspect(err).split(" { ")[0], stack);
|
||
});
|
||
|
||
// https://github.com/nodejs/node-v0.x-archive/issues/1941
|
||
assert.strictEqual(util.inspect({ __proto__: Date.prototype }), "Date {}");
|
||
|
||
// https://github.com/nodejs/node-v0.x-archive/issues/1944
|
||
{
|
||
const d = new Date();
|
||
d.toUTCString = null;
|
||
util.inspect(d);
|
||
}
|
||
|
||
// Should not throw.
|
||
{
|
||
const d = new Date();
|
||
d.toISOString = null;
|
||
util.inspect(d);
|
||
}
|
||
|
||
// Should not throw.
|
||
{
|
||
const r = /regexp/;
|
||
r.toString = null;
|
||
util.inspect(r);
|
||
}
|
||
|
||
// Ref: https://github.com/nodejs/node-v0.x-archive/issues/2225
|
||
{
|
||
const x = { [util.inspect.custom]: util.inspect };
|
||
assert(
|
||
util.inspect(x).includes("[Symbol(nodejs.util.inspect.custom)]: [Function: inspect] {\n"),
|
||
`Expected '${util.inspect(x)}' to include '[Symbol(nodejs.util.inspect.custom)]: [Function: inspect] {\n'`,
|
||
);
|
||
}
|
||
|
||
// `util.inspect` should display the escaped value of a key.
|
||
{
|
||
const w = {
|
||
"\\": 1,
|
||
"\\\\": 2,
|
||
"\\\\\\": 3,
|
||
"\\\\\\\\": 4,
|
||
"\n": 5,
|
||
"\r": 6,
|
||
};
|
||
|
||
const y = ["a", "b", "c"];
|
||
y["\\\\"] = "d";
|
||
y["\n"] = "e";
|
||
y["\r"] = "f";
|
||
|
||
assert.strictEqual(
|
||
util.inspect(w),
|
||
"{ '\\\\': 1, '\\\\\\\\': 2, '\\\\\\\\\\\\': 3, " + "'\\\\\\\\\\\\\\\\': 4, '\\n': 5, '\\r': 6 }",
|
||
);
|
||
assert.strictEqual(util.inspect(y), "[ 'a', 'b', 'c', '\\\\\\\\': 'd', " + "'\\n': 'e', '\\r': 'f' ]");
|
||
}
|
||
|
||
// Escape unpaired surrogate pairs.
|
||
{
|
||
const edgeChar = String.fromCharCode(0xd799);
|
||
|
||
for (let charCode = 0xd800; charCode < 0xdfff; charCode++) {
|
||
const surrogate = String.fromCharCode(charCode);
|
||
|
||
assert.strictEqual(util.inspect(surrogate), `'\\u${charCode.toString(16)}'`);
|
||
assert.strictEqual(
|
||
util.inspect(`${"a".repeat(200)}${surrogate}`),
|
||
`'${"a".repeat(200)}\\u${charCode.toString(16)}'`,
|
||
);
|
||
assert.strictEqual(
|
||
util.inspect(`${surrogate}${"a".repeat(200)}`),
|
||
`'\\u${charCode.toString(16)}${"a".repeat(200)}'`,
|
||
);
|
||
if (charCode < 0xdc00) {
|
||
const highSurrogate = surrogate;
|
||
const lowSurrogate = String.fromCharCode(charCode + 1024);
|
||
assert(!util.inspect(`${edgeChar}${highSurrogate}${lowSurrogate}${edgeChar}`).includes("\\u"));
|
||
assert.strictEqual(
|
||
(util.inspect(`${highSurrogate}${highSurrogate}${lowSurrogate}`).match(/\\u/g) ?? []).length,
|
||
1,
|
||
);
|
||
} else {
|
||
assert.strictEqual(
|
||
util.inspect(`${edgeChar}${surrogate}${edgeChar}`),
|
||
`'${edgeChar}\\u${charCode.toString(16)}${edgeChar}'`,
|
||
);
|
||
}
|
||
}
|
||
}
|
||
|
||
// Test util.inspect.styles and util.inspect.colors.
|
||
{
|
||
function testColorStyle(style, input) {
|
||
const colorName = util.inspect.styles[style];
|
||
let color = ["", ""];
|
||
if (util.inspect.colors[colorName]) color = util.inspect.colors[colorName];
|
||
|
||
const withoutColor = util.inspect(input, false, 0, false);
|
||
const withColor = util.inspect(input, false, 0, true);
|
||
const expect = `\u001b[${color[0]}m${withoutColor}\u001b[${color[1]}m`;
|
||
assert.strictEqual(withColor, expect, `util.inspect color for style ${style}`);
|
||
}
|
||
|
||
testColorStyle("special", function () {});
|
||
testColorStyle("number", 123.456);
|
||
testColorStyle("boolean", true);
|
||
testColorStyle("undefined", undefined);
|
||
testColorStyle("null", null);
|
||
testColorStyle("string", "test string");
|
||
testColorStyle("date", new Date());
|
||
testColorStyle("regexp", /regexp/);
|
||
}
|
||
|
||
// An object with "hasOwnProperty" overwritten should not throw.
|
||
util.inspect({ hasOwnProperty: null });
|
||
|
||
// New API, accepts an "options" object.
|
||
{
|
||
const subject = { foo: "bar", hello: 31, a: { b: { c: { d: 0 } } } };
|
||
Object.defineProperty(subject, "hidden", { enumerable: false, value: null });
|
||
|
||
assert.strictEqual(util.inspect(subject, { showHidden: false }).includes("hidden"), false);
|
||
assert.strictEqual(util.inspect(subject, { showHidden: true }).includes("hidden"), true);
|
||
assert.strictEqual(util.inspect(subject, { colors: false }).includes("\u001b[32m"), false);
|
||
assert.strictEqual(util.inspect(subject, { colors: true }).includes("\u001b[32m"), true);
|
||
assert.strictEqual(util.inspect(subject, { depth: 2 }).includes("c: [Object]"), true);
|
||
assert.strictEqual(util.inspect(subject, { depth: 0 }).includes("a: [Object]"), true);
|
||
assert.strictEqual(util.inspect(subject, { depth: null }).includes("{ d: 0 }"), true);
|
||
assert.strictEqual(util.inspect(subject, { depth: undefined }).includes("{ d: 0 }"), true);
|
||
}
|
||
|
||
{
|
||
// "customInspect" option can enable/disable calling [util.inspect.custom]().
|
||
const subject = { [util.inspect.custom]: () => 123 };
|
||
|
||
assert.strictEqual(util.inspect(subject, { customInspect: true }).includes("123"), true);
|
||
assert.strictEqual(util.inspect(subject, { customInspect: true }).includes("inspect"), false);
|
||
assert.strictEqual(util.inspect(subject, { customInspect: false }).includes("123"), false);
|
||
assert.strictEqual(util.inspect(subject, { customInspect: false }).includes("inspect"), true);
|
||
|
||
// A custom [util.inspect.custom]() should be able to return other Objects.
|
||
subject[util.inspect.custom] = () => ({ foo: "bar" });
|
||
|
||
assert.strictEqual(util.inspect(subject), "{ foo: 'bar' }");
|
||
|
||
subject[util.inspect.custom] = mustCall((depth, opts, inspect) => {
|
||
const clone = { ...opts };
|
||
// This might change at some point but for now we keep the stylize function.
|
||
// The function should either be documented or an alternative should be implemented.
|
||
assert.strictEqual(typeof opts.stylize, "function");
|
||
assert.strictEqual(opts.seen, undefined);
|
||
assert.strictEqual(opts.budget, undefined);
|
||
assert.strictEqual(opts.indentationLvl, undefined);
|
||
assert.strictEqual(opts.showHidden, false);
|
||
assert.strictEqual(inspect, util.inspect);
|
||
assert.deepStrictEqual(
|
||
new Set(Object.keys(inspect.defaultOptions).concat(["stylize"])),
|
||
new Set(Object.keys(opts)),
|
||
);
|
||
opts.showHidden = true;
|
||
return {
|
||
[inspect.custom]: mustCall((depth, opts2) => {
|
||
assert.deepStrictEqual(clone, opts2);
|
||
}),
|
||
};
|
||
});
|
||
|
||
util.inspect(subject);
|
||
|
||
// util.inspect.custom is a shared symbol which can be accessed as
|
||
// Symbol.for("nodejs.util.inspect.custom").
|
||
const inspect = Symbol.for("nodejs.util.inspect.custom");
|
||
|
||
subject[inspect] = () => ({ baz: "quux" });
|
||
|
||
assert.strictEqual(util.inspect(subject), "{ baz: 'quux' }");
|
||
|
||
subject[inspect] = (depth, opts) => {
|
||
assert.strictEqual(opts.customInspectOptions, true);
|
||
assert.strictEqual(opts.seen, null);
|
||
return {};
|
||
};
|
||
|
||
util.inspect(subject, { customInspectOptions: true, seen: null });
|
||
}
|
||
|
||
{
|
||
const subject = {
|
||
[util.inspect.custom]: mustCall((depth, opts) => {
|
||
assert.strictEqual(depth, null);
|
||
assert.strictEqual(opts.compact, true);
|
||
}),
|
||
};
|
||
util.inspect(subject, { depth: null, compact: true });
|
||
}
|
||
|
||
{
|
||
// Returning `this` from a custom inspection function works.
|
||
const subject = {
|
||
a: 123,
|
||
[util.inspect.custom]() {
|
||
return this;
|
||
},
|
||
};
|
||
const UIC = "nodejs.util.inspect.custom";
|
||
assert.strictEqual(util.inspect(subject), `{\n a: 123,\n [Symbol(${UIC})]: [Function: [${UIC}]]\n}`);
|
||
}
|
||
|
||
//! non-standard property
|
||
// Verify that it's possible to use the stylize function to manipulate input.
|
||
/*assert.strictEqual(
|
||
util.inspect([1, 2, 3], { stylize() { return 'x'; } }),
|
||
'[ x, x, x ]'
|
||
);*/
|
||
|
||
// Using `util.inspect` with "colors" option should produce as many lines as
|
||
// without it.
|
||
{
|
||
function testLines(input) {
|
||
const countLines = str => (str.match(/\n/g) || []).length;
|
||
const withoutColor = util.inspect(input);
|
||
const withColor = util.inspect(input, { colors: true });
|
||
assert.strictEqual(countLines(withoutColor), countLines(withColor));
|
||
}
|
||
|
||
const bigArray = new Array(100).fill().map((value, index) => index);
|
||
|
||
testLines([1, 2, 3, 4, 5, 6, 7]);
|
||
testLines(bigArray);
|
||
testLines({ foo: "bar", baz: 35, b: { a: 35 } });
|
||
testLines({ a: { a: 3, b: 1, c: 1, d: 1, e: 1, f: 1, g: 1, h: 1 }, b: 1 });
|
||
testLines({
|
||
foo: "bar",
|
||
baz: 35,
|
||
b: { a: 35 },
|
||
veryLongKey: "very long value",
|
||
evenLongerKey: ["with even longer value in array"],
|
||
});
|
||
}
|
||
|
||
// Test boxed primitives output the correct values.
|
||
assert.strictEqual(util.inspect(new String("test")), "[String: 'test']");
|
||
assert.strictEqual(util.inspect(new String("test"), { colors: true }), "\u001b[32m[String: 'test']\u001b[39m");
|
||
assert.strictEqual(util.inspect(Object(Symbol("test"))), "[Symbol: Symbol(test)]");
|
||
assert.strictEqual(util.inspect(new Boolean(false)), "[Boolean: false]");
|
||
assert.strictEqual(util.inspect(Object.setPrototypeOf(new Boolean(true), null)), "[Boolean (null prototype): true]");
|
||
assert.strictEqual(util.inspect(new Number(0)), "[Number: 0]");
|
||
|
||
assert.strictEqual(
|
||
util.inspect(
|
||
Object.defineProperty(Object.setPrototypeOf(new Number(-0), Array.prototype), Symbol.toStringTag, {
|
||
value: "Foobar",
|
||
}),
|
||
),
|
||
"[Number (Array): -0] [Foobar]",
|
||
);
|
||
assert.strictEqual(util.inspect(new Number(-1.1)), "[Number: -1.1]");
|
||
assert.strictEqual(util.inspect(new Number(13.37)), "[Number: 13.37]");
|
||
|
||
// Test boxed primitives with own properties.
|
||
{
|
||
const str = new String("baz");
|
||
str.foo = "bar";
|
||
assert.strictEqual(util.inspect(str), "[String: 'baz'] { foo: 'bar' }");
|
||
|
||
const bool = new Boolean(true);
|
||
bool.foo = "bar";
|
||
assert.strictEqual(util.inspect(bool), "[Boolean: true] { foo: 'bar' }");
|
||
|
||
const num = new Number(13.37);
|
||
num.foo = "bar";
|
||
assert.strictEqual(util.inspect(num), "[Number: 13.37] { foo: 'bar' }");
|
||
|
||
const sym = Object(Symbol("foo"));
|
||
sym.foo = "bar";
|
||
assert.strictEqual(util.inspect(sym), "[Symbol: Symbol(foo)] { foo: 'bar' }");
|
||
|
||
const big = Object(BigInt(55));
|
||
big.foo = "bar";
|
||
assert.strictEqual(util.inspect(big), "[BigInt: 55n] { foo: 'bar' }");
|
||
}
|
||
|
||
// Test es6 Symbol.
|
||
if (typeof Symbol !== "undefined") {
|
||
assert.strictEqual(util.inspect(Symbol()), "Symbol()");
|
||
assert.strictEqual(util.inspect(Symbol(123)), "Symbol(123)");
|
||
assert.strictEqual(util.inspect(Symbol("hi")), "Symbol(hi)");
|
||
assert.strictEqual(util.inspect([Symbol()]), "[ Symbol() ]");
|
||
assert.strictEqual(util.inspect({ foo: Symbol() }), "{ foo: Symbol() }");
|
||
|
||
const options = { showHidden: true };
|
||
let subject = {};
|
||
|
||
subject[Symbol("sym\nbol")] = 42;
|
||
|
||
assert.strictEqual(util.inspect(subject), "{ [Symbol(sym\\nbol)]: 42 }");
|
||
assert.strictEqual(util.inspect(subject, options), "{ [Symbol(sym\\nbol)]: 42 }");
|
||
|
||
Object.defineProperty(subject, Symbol(), { enumerable: false, value: "non-enum" });
|
||
assert.strictEqual(util.inspect(subject), "{ [Symbol(sym\\nbol)]: 42 }");
|
||
assert.strictEqual(util.inspect(subject, options), "{ [Symbol(sym\\nbol)]: 42, [Symbol()]: 'non-enum' }");
|
||
|
||
subject = [1, 2, 3];
|
||
subject[Symbol("symbol")] = 42;
|
||
assert.strictEqual(util.inspect(subject), "[ 1, 2, 3, [Symbol(symbol)]: 42 ]");
|
||
}
|
||
|
||
// Test Set.
|
||
{
|
||
assert.strictEqual(util.inspect(new Set()), "Set(0) {}");
|
||
assert.strictEqual(util.inspect(new Set([1, 2, 3])), "Set(3) { 1, 2, 3 }");
|
||
assert.strictEqual(util.inspect(new Set([1, 2, 3]), { maxArrayLength: 1 }), "Set(3) { 1, ... 2 more items }");
|
||
const set = new Set(["foo"]);
|
||
set.bar = 42;
|
||
assert.strictEqual(util.inspect(set, { showHidden: true }), "Set(1) { 'foo', bar: 42 }");
|
||
}
|
||
|
||
// Test circular Set.
|
||
{
|
||
const set = new Set();
|
||
set.add(set);
|
||
assert.strictEqual(util.inspect(set), "<ref *1> Set(1) { [Circular *1] }");
|
||
}
|
||
|
||
// Test Map.
|
||
{
|
||
assert.strictEqual(util.inspect(new Map()), "Map(0) {}");
|
||
assert.strictEqual(
|
||
util.inspect(
|
||
new Map([
|
||
[1, "a"],
|
||
[2, "b"],
|
||
[3, "c"],
|
||
]),
|
||
),
|
||
"Map(3) { 1 => 'a', 2 => 'b', 3 => 'c' }",
|
||
);
|
||
assert.strictEqual(
|
||
util.inspect(
|
||
new Map([
|
||
[1, "a"],
|
||
[2, "b"],
|
||
[3, "c"],
|
||
]),
|
||
{ maxArrayLength: 1 },
|
||
),
|
||
"Map(3) { 1 => 'a', ... 2 more items }",
|
||
);
|
||
const map = new Map([["foo", null]]);
|
||
map.bar = 42;
|
||
assert.strictEqual(util.inspect(map, true), "Map(1) { 'foo' => null, bar: 42 }");
|
||
}
|
||
|
||
// Test circular Map.
|
||
{
|
||
const map = new Map();
|
||
map.set(map, "map");
|
||
assert.strictEqual(inspect(map), "<ref *1> Map(1) { [Circular *1] => 'map' }");
|
||
map.set(map, map);
|
||
assert.strictEqual(inspect(map), "<ref *1> Map(1) { [Circular *1] => [Circular *1] }");
|
||
map.delete(map);
|
||
map.set("map", map);
|
||
assert.strictEqual(inspect(map), "<ref *1> Map(1) { 'map' => [Circular *1] }");
|
||
}
|
||
|
||
// Test multiple circular references.
|
||
{
|
||
const obj = {};
|
||
obj.a = [obj];
|
||
obj.b = {};
|
||
obj.b.inner = obj.b;
|
||
obj.b.obj = obj;
|
||
|
||
assert.strictEqual(
|
||
inspect(obj),
|
||
"<ref *1> {\n" +
|
||
" a: [ [Circular *1] ],\n" +
|
||
" b: <ref *2> { inner: [Circular *2], obj: [Circular *1] }\n" +
|
||
"}",
|
||
);
|
||
}
|
||
|
||
// Test Promise.
|
||
{
|
||
const resolved = Promise.resolve(3);
|
||
assert.strictEqual(util.inspect(resolved), "Promise { 3 }");
|
||
|
||
const rejected = Promise.reject(3);
|
||
assert.strictEqual(util.inspect(rejected), "Promise { <rejected> 3 }");
|
||
// Squelch UnhandledPromiseRejection.
|
||
rejected.catch(() => {});
|
||
|
||
const pending = new Promise(() => {});
|
||
assert.strictEqual(util.inspect(pending), "Promise { <pending> }");
|
||
|
||
const promiseWithProperty = Promise.resolve("foo");
|
||
promiseWithProperty.bar = 42;
|
||
assert.strictEqual(util.inspect(promiseWithProperty), "Promise { 'foo', bar: 42 }");
|
||
}
|
||
|
||
// Make sure it doesn't choke on polyfills. Unlike Set/Map, there is no standard interface to
|
||
// synchronously inspect a Promise, so our techniques only work on a bonafide native Promise.
|
||
{
|
||
const oldPromise = Promise;
|
||
global.Promise = function () {
|
||
this.bar = 42;
|
||
};
|
||
assert.strictEqual(util.inspect(new Promise()), "{ bar: 42 }");
|
||
global.Promise = oldPromise;
|
||
}
|
||
|
||
// Test Map iterators.
|
||
{
|
||
const map = new Map([["foo", "bar"]]);
|
||
assert.strictEqual(util.inspect(map.keys()), "[Map Iterator] { 'foo' }");
|
||
const mapValues = map.values();
|
||
Object.defineProperty(mapValues, Symbol.toStringTag, { value: "Foo" });
|
||
assert.strictEqual(util.inspect(mapValues), "[Foo] [Map Iterator] { 'bar' }");
|
||
map.set("A", "B!");
|
||
assert.strictEqual(
|
||
util.inspect(map.entries(), { maxArrayLength: 1 }),
|
||
"[Map Entries] { [ 'foo', 'bar' ], ... 1 more item }",
|
||
);
|
||
// Make sure the iterator doesn't get consumed.
|
||
const keys = map.keys();
|
||
assert.strictEqual(util.inspect(keys), "[Map Iterator] { 'foo', 'A' }");
|
||
assert.strictEqual(util.inspect(keys), "[Map Iterator] { 'foo', 'A' }");
|
||
keys.extra = true;
|
||
assert.strictEqual(util.inspect(keys, { maxArrayLength: 0 }), "[Map Iterator] { ... 2 more items, extra: true }");
|
||
}
|
||
|
||
// Test Set iterators.
|
||
{
|
||
const aSet = new Set([1]);
|
||
assert.strictEqual(util.inspect(aSet.entries(), { compact: false }), "[Set Entries] {\n [\n 1,\n 1\n ]\n}");
|
||
aSet.add(3);
|
||
assert.strictEqual(util.inspect(aSet.keys()), "[Set Iterator] { 1, 3 }");
|
||
assert.strictEqual(util.inspect(aSet.values()), "[Set Iterator] { 1, 3 }");
|
||
const setEntries = aSet.entries();
|
||
Object.defineProperty(setEntries, Symbol.toStringTag, { value: "Foo" });
|
||
assert.strictEqual(util.inspect(setEntries), "[Foo] [Set Entries] { [ 1, 1 ], [ 3, 3 ] }");
|
||
// Make sure the iterator doesn't get consumed.
|
||
const keys = aSet.keys();
|
||
Object.defineProperty(keys, Symbol.toStringTag, { value: null });
|
||
assert.strictEqual(util.inspect(keys), "[Set Iterator] { 1, 3 }");
|
||
assert.strictEqual(util.inspect(keys), "[Set Iterator] { 1, 3 }");
|
||
keys.extra = true;
|
||
assert.strictEqual(util.inspect(keys, { maxArrayLength: 1 }), "[Set Iterator] { 1, ... 1 more item, extra: true }");
|
||
}
|
||
|
||
// Minimal inspection should still return as much information as possible about
|
||
// the constructor and Symbol.toStringTag.
|
||
{
|
||
class Foo {
|
||
get [Symbol.toStringTag]() {
|
||
return "ABC";
|
||
}
|
||
}
|
||
const a = new Foo();
|
||
assert.strictEqual(inspect(a, { depth: -1 }), "Foo [ABC] {}");
|
||
a.foo = true;
|
||
assert.strictEqual(inspect(a, { depth: -1 }), "[Foo [ABC]]");
|
||
Object.defineProperty(a, Symbol.toStringTag, {
|
||
value: "Foo",
|
||
configurable: true,
|
||
writable: true,
|
||
});
|
||
assert.strictEqual(inspect(a, { depth: -1 }), "[Foo]");
|
||
delete a[Symbol.toStringTag];
|
||
Object.setPrototypeOf(a, null);
|
||
// TODO: null prototypes
|
||
// assert.strictEqual(inspect(a, { depth: -1 }), '[Foo: null prototype]');
|
||
assert.strictEqual(inspect(a, { depth: -1 }), "[Object: null prototype]");
|
||
delete a.foo;
|
||
assert.strictEqual(
|
||
inspect(a, { depth: -1 }),
|
||
// TODO: '[Foo: null prototype] {}');
|
||
"[Object: null prototype] {}",
|
||
);
|
||
Object.defineProperty(a, Symbol.toStringTag, {
|
||
value: "ABC",
|
||
configurable: true,
|
||
});
|
||
assert.strictEqual(
|
||
inspect(a, { depth: -1 }),
|
||
// TODO: '[Foo: null prototype] [ABC] {}'
|
||
"[Object: null prototype] [ABC] {}",
|
||
);
|
||
Object.defineProperty(a, Symbol.toStringTag, {
|
||
value: "Foo",
|
||
configurable: true,
|
||
});
|
||
assert.strictEqual(inspect(a, { depth: -1 }), "[Object: null prototype] [Foo] {}");
|
||
}
|
||
|
||
// Test alignment of items in container.
|
||
// Assumes that the first numeric character is the start of an item.
|
||
{
|
||
function checkAlignment(container, start, lineX, end) {
|
||
const lines = util.inspect(container).split("\n");
|
||
lines.forEach((line, i) => {
|
||
if (i === 0) {
|
||
assert.strictEqual(line, start);
|
||
} else if (i === lines.length - 1) {
|
||
assert.strictEqual(line, end);
|
||
} else {
|
||
let expected = lineX.replace("X", i - 1);
|
||
if (i !== lines.length - 2) expected += ",";
|
||
assert.strictEqual(line, expected);
|
||
}
|
||
});
|
||
}
|
||
|
||
const bigArray = [];
|
||
for (let i = 0; i < 100; i++) {
|
||
bigArray.push(i);
|
||
}
|
||
|
||
const obj = {};
|
||
bigArray.forEach(prop => {
|
||
obj[prop] = null;
|
||
});
|
||
|
||
checkAlignment(obj, "{", " 'X': null", "}");
|
||
checkAlignment(new Set(bigArray), "Set(100) {", " X", "}");
|
||
checkAlignment(new Map(bigArray.map(number => [number, null])), "Map(100) {", " X => null", "}");
|
||
}
|
||
|
||
// Test display of constructors.
|
||
{
|
||
class ObjectSubclass {}
|
||
class ArraySubclass extends Array {}
|
||
class SetSubclass extends Set {}
|
||
class MapSubclass extends Map {}
|
||
class PromiseSubclass extends Promise {}
|
||
class SymbolNameClass {
|
||
static name = Symbol("name");
|
||
}
|
||
|
||
const x = new ObjectSubclass();
|
||
x.foo = 42;
|
||
assert.strictEqual(util.inspect(x), "ObjectSubclass { foo: 42 }");
|
||
assert.strictEqual(util.inspect(new ArraySubclass(1, 2, 3)), "ArraySubclass(3) [ 1, 2, 3 ]");
|
||
assert.strictEqual(util.inspect(new SetSubclass([1, 2, 3])), "SetSubclass(3) [Set] { 1, 2, 3 }");
|
||
assert.strictEqual(util.inspect(new MapSubclass([["foo", 42]])), "MapSubclass(1) [Map] { 'foo' => 42 }");
|
||
assert.strictEqual(util.inspect(new PromiseSubclass(() => {})), "PromiseSubclass [Promise] { <pending> }");
|
||
assert.strictEqual(util.inspect(new SymbolNameClass()), "Symbol(name) {}");
|
||
assert.strictEqual(
|
||
util.inspect({ a: { b: new ArraySubclass([1, [2], 3]) } }, { depth: 1 }),
|
||
"{ a: { b: [ArraySubclass] } }",
|
||
);
|
||
assert.strictEqual(
|
||
util.inspect(Object.setPrototypeOf(x, null)),
|
||
// TODO: '[ObjectSubclass: null prototype] { foo: 42 }'
|
||
"[Object: null prototype] { foo: 42 }",
|
||
);
|
||
}
|
||
|
||
// Empty and circular before depth.
|
||
{
|
||
const arr = [[[[]]]];
|
||
assert.strictEqual(util.inspect(arr), "[ [ [ [] ] ] ]");
|
||
arr[0][0][0][0] = [];
|
||
assert.strictEqual(util.inspect(arr), "[ [ [ [Array] ] ] ]");
|
||
arr[0][0][0] = {};
|
||
assert.strictEqual(util.inspect(arr), "[ [ [ {} ] ] ]");
|
||
arr[0][0][0] = { a: 2 };
|
||
assert.strictEqual(util.inspect(arr), "[ [ [ [Object] ] ] ]");
|
||
arr[0][0][0] = arr;
|
||
assert.strictEqual(util.inspect(arr), "<ref *1> [ [ [ [Circular *1] ] ] ]");
|
||
arr[0][0][0] = arr[0][0];
|
||
assert.strictEqual(util.inspect(arr), "[ [ <ref *1> [ [Circular *1] ] ] ]");
|
||
}
|
||
|
||
// Corner cases.
|
||
{
|
||
const x = { constructor: 42 };
|
||
assert.strictEqual(util.inspect(x), "{ constructor: 42 }");
|
||
}
|
||
|
||
{
|
||
const x = {};
|
||
Object.defineProperty(x, "constructor", {
|
||
get: function () {
|
||
throw new Error("should not access constructor");
|
||
},
|
||
enumerable: true,
|
||
});
|
||
assert.strictEqual(util.inspect(x), "{ constructor: [Getter] }");
|
||
}
|
||
|
||
{
|
||
const x = new (function () {})();
|
||
assert.strictEqual(util.inspect(x), "{}");
|
||
}
|
||
|
||
{
|
||
const x = { __proto__: null };
|
||
assert.strictEqual(util.inspect(x), "[Object: null prototype] {}");
|
||
}
|
||
|
||
{
|
||
const x = [];
|
||
x[""] = 1;
|
||
assert.strictEqual(util.inspect(x), "[ '': 1 ]");
|
||
}
|
||
|
||
// The following maxArrayLength tests were introduced after v6.0.0 was released.
|
||
// Do not backport to v5/v4 unless all of
|
||
// https://github.com/nodejs/node/pull/6334 is backported.
|
||
{
|
||
const x = new Array(101).fill();
|
||
assert(util.inspect(x).endsWith("1 more item\n]"));
|
||
assert(!util.inspect(x, { maxArrayLength: 101 }).endsWith("1 more item\n]"));
|
||
assert.strictEqual(util.inspect(x, { maxArrayLength: -1 }), "[ ... 101 more items ]");
|
||
assert.strictEqual(util.inspect(x, { maxArrayLength: 0 }), "[ ... 101 more items ]");
|
||
}
|
||
|
||
{
|
||
const x = Array(101);
|
||
assert.strictEqual(util.inspect(x, { maxArrayLength: 0 }), "[ ... 101 more items ]");
|
||
assert(!util.inspect(x, { maxArrayLength: null }).endsWith("1 more item\n]"));
|
||
assert(!util.inspect(x, { maxArrayLength: Infinity }).endsWith("1 more item ]"));
|
||
}
|
||
|
||
{
|
||
const x = new Uint8Array(101);
|
||
assert(util.inspect(x).endsWith("1 more item\n]"));
|
||
assert(!util.inspect(x, { maxArrayLength: 101 }).includes("1 more item"));
|
||
assert.strictEqual(util.inspect(x, { maxArrayLength: 0 }), "Uint8Array(101) [ ... 101 more items ]");
|
||
assert(!util.inspect(x, { maxArrayLength: null }).includes("1 more item"));
|
||
assert(util.inspect(x, { maxArrayLength: Infinity }).endsWith(" 0, 0\n]"));
|
||
}
|
||
|
||
{
|
||
const obj = { foo: "abc", bar: "xyz" };
|
||
const oneLine = util.inspect(obj, { breakLength: Infinity });
|
||
// Subtract four for the object's two curly braces and two spaces of padding.
|
||
// Add one more to satisfy the strictly greater than condition in the code.
|
||
const breakpoint = oneLine.length - 5;
|
||
const twoLines = util.inspect(obj, { breakLength: breakpoint });
|
||
|
||
assert.strictEqual(oneLine, "{ foo: 'abc', bar: 'xyz' }");
|
||
assert.strictEqual(util.inspect(obj, { breakLength: breakpoint + 1 }), twoLines);
|
||
assert.strictEqual(twoLines, "{\n foo: 'abc',\n bar: 'xyz'\n}");
|
||
}
|
||
|
||
// util.inspect.defaultOptions tests.
|
||
{
|
||
const arr = new Array(101).fill();
|
||
const obj = { a: { a: { a: { a: 1 } } } };
|
||
|
||
const oldOptions = { ...util.inspect.defaultOptions };
|
||
|
||
// Set single option through property assignment.
|
||
util.inspect.defaultOptions.maxArrayLength = null;
|
||
assert.doesNotMatch(util.inspect(arr), /1 more item/);
|
||
util.inspect.defaultOptions.maxArrayLength = oldOptions.maxArrayLength;
|
||
assert.match(util.inspect(arr), /1 more item/);
|
||
util.inspect.defaultOptions.depth = null;
|
||
assert.doesNotMatch(util.inspect(obj), /Object/);
|
||
util.inspect.defaultOptions.depth = oldOptions.depth;
|
||
assert.match(util.inspect(obj), /Object/);
|
||
assert.strictEqual(JSON.stringify(util.inspect.defaultOptions), JSON.stringify(oldOptions));
|
||
|
||
// Set multiple options through object assignment.
|
||
util.inspect.defaultOptions = { maxArrayLength: null, depth: 2 };
|
||
assert.doesNotMatch(util.inspect(arr), /1 more item/);
|
||
assert.match(util.inspect(obj), /Object/);
|
||
util.inspect.defaultOptions = oldOptions;
|
||
assert.match(util.inspect(arr), /1 more item/);
|
||
assert.match(util.inspect(obj), /Object/);
|
||
assert.strictEqual(JSON.stringify(util.inspect.defaultOptions), JSON.stringify(oldOptions));
|
||
|
||
assert.throws(
|
||
() => {
|
||
util.inspect.defaultOptions = null;
|
||
},
|
||
{
|
||
code: "ERR_INVALID_ARG_TYPE",
|
||
name: "TypeError",
|
||
message: 'The "options" argument must be of type object. ' + "Received null",
|
||
},
|
||
);
|
||
|
||
assert.throws(
|
||
() => {
|
||
util.inspect.defaultOptions = "bad";
|
||
},
|
||
{
|
||
code: "ERR_INVALID_ARG_TYPE",
|
||
name: "TypeError",
|
||
message: 'The "options" argument must be of type object. ' + "Received type string ('bad')",
|
||
},
|
||
);
|
||
}
|
||
|
||
util.inspect(process);
|
||
|
||
// Setting custom inspect property to a non-function should do nothing.
|
||
{
|
||
const obj = { [util.inspect.custom]: "fhqwhgads" };
|
||
assert.strictEqual(util.inspect(obj), "{ [Symbol(nodejs.util.inspect.custom)]: 'fhqwhgads' }");
|
||
}
|
||
|
||
{
|
||
// @@toStringTag
|
||
const obj = { [Symbol.toStringTag]: "a" };
|
||
assert.strictEqual(util.inspect(obj), "{ [Symbol(Symbol.toStringTag)]: 'a' }");
|
||
Object.defineProperty(obj, Symbol.toStringTag, {
|
||
value: "a",
|
||
enumerable: false,
|
||
});
|
||
assert.strictEqual(util.inspect(obj), "Object [a] {}");
|
||
assert.strictEqual(util.inspect(obj, { showHidden: true }), "{ [Symbol(Symbol.toStringTag)]: 'a' }");
|
||
|
||
class Foo {
|
||
constructor() {
|
||
this.foo = "bar";
|
||
}
|
||
|
||
get [Symbol.toStringTag]() {
|
||
return this.foo;
|
||
}
|
||
}
|
||
|
||
assert.strictEqual(
|
||
util.inspect(Object.create(null, { [Symbol.toStringTag]: { value: "foo" } })),
|
||
"[Object: null prototype] [foo] {}",
|
||
);
|
||
|
||
assert.strictEqual(util.inspect(new Foo()), "Foo [bar] { foo: 'bar' }");
|
||
|
||
assert.strictEqual(util.inspect(new (class extends Foo {})()), "Foo [bar] { foo: 'bar' }");
|
||
|
||
assert.strictEqual(
|
||
util.inspect(
|
||
Object.create(
|
||
{ __proto__: Foo.prototype },
|
||
{
|
||
foo: { value: "bar", enumerable: true },
|
||
},
|
||
),
|
||
),
|
||
"Foo [bar] { foo: 'bar' }",
|
||
);
|
||
|
||
class ThrowingClass {
|
||
get [Symbol.toStringTag]() {
|
||
throw new Error("toStringTag error");
|
||
}
|
||
}
|
||
|
||
assert.throws(() => util.inspect(new ThrowingClass()), /toStringTag error/);
|
||
|
||
class NotStringClass {
|
||
get [Symbol.toStringTag]() {
|
||
return null;
|
||
}
|
||
}
|
||
|
||
assert.strictEqual(util.inspect(new NotStringClass()), "NotStringClass {}");
|
||
}
|
||
|
||
{
|
||
const o = {
|
||
a: [
|
||
1,
|
||
2,
|
||
[
|
||
[
|
||
"Lorem ipsum dolor\nsit amet,\tconsectetur adipiscing elit, sed do " +
|
||
"eiusmod tempor incididunt ut labore et dolore magna aliqua.",
|
||
"test",
|
||
"foo",
|
||
],
|
||
],
|
||
4,
|
||
],
|
||
b: new Map([
|
||
["za", 1],
|
||
["zb", "test"],
|
||
]),
|
||
};
|
||
|
||
let out = util.inspect(o, { compact: true, depth: 5, breakLength: 80 });
|
||
let expect = [
|
||
"{ a:",
|
||
" [ 1,",
|
||
" 2,",
|
||
" [ [ 'Lorem ipsum dolor\\nsit amet,\\tconsectetur adipiscing elit, " +
|
||
"sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.',",
|
||
" 'test',",
|
||
" 'foo' ] ],",
|
||
" 4 ],",
|
||
" b: Map(2) { 'za' => 1, 'zb' => 'test' } }",
|
||
].join("\n");
|
||
assert.strictEqual(out, expect);
|
||
|
||
out = util.inspect(o, { compact: false, depth: 5, breakLength: 60 });
|
||
expect = [
|
||
"{",
|
||
" a: [",
|
||
" 1,",
|
||
" 2,",
|
||
" [",
|
||
" [",
|
||
" 'Lorem ipsum dolor\\n' +",
|
||
" 'sit amet,\\tconsectetur adipiscing elit, sed do eiusmod " +
|
||
"tempor incididunt ut labore et dolore magna aliqua.',",
|
||
" 'test',",
|
||
" 'foo'",
|
||
" ]",
|
||
" ],",
|
||
" 4",
|
||
" ],",
|
||
" b: Map(2) {",
|
||
" 'za' => 1,",
|
||
" 'zb' => 'test'",
|
||
" }",
|
||
"}",
|
||
].join("\n");
|
||
assert.strictEqual(out, expect);
|
||
|
||
out = util.inspect(o.a[2][0][0], { compact: false, breakLength: 30 });
|
||
expect = [
|
||
"'Lorem ipsum dolor\\n' +",
|
||
" 'sit amet,\\tconsectetur adipiscing elit, sed do eiusmod tempor " +
|
||
"incididunt ut labore et dolore magna aliqua.'",
|
||
].join("\n");
|
||
assert.strictEqual(out, expect);
|
||
|
||
out = util.inspect("12345678901234567890123456789012345678901234567890", { compact: false, breakLength: 3 });
|
||
expect = "'12345678901234567890123456789012345678901234567890'";
|
||
assert.strictEqual(out, expect);
|
||
|
||
out = util.inspect("12 45 78 01 34 67 90 23 56 89 123456789012345678901234567890", {
|
||
compact: false,
|
||
breakLength: 3,
|
||
});
|
||
expect = ["'12 45 78 01 34 67 90 23 56 89 123456789012345678901234567890'"].join("\n");
|
||
assert.strictEqual(out, expect);
|
||
|
||
o.a = () => {};
|
||
o.b = new Number(3);
|
||
out = util.inspect(o, { compact: false, breakLength: 3 });
|
||
expect = ["{", " a: [Function (anonymous)],", " b: [Number: 3]", "}"].join("\n");
|
||
assert.strictEqual(out, expect);
|
||
|
||
out = util.inspect(o, { compact: false, breakLength: 3, showHidden: true });
|
||
expect = [
|
||
"{",
|
||
" a: [Function (anonymous)] {",
|
||
" [length]: 0,",
|
||
" [name]: ''",
|
||
" },",
|
||
" b: [Number: 3]",
|
||
"}",
|
||
].join("\n");
|
||
assert.strictEqual(out, expect);
|
||
|
||
o[util.inspect.custom] = () => 42;
|
||
out = util.inspect(o, { compact: false, breakLength: 3 });
|
||
expect = "42";
|
||
assert.strictEqual(out, expect);
|
||
|
||
o[util.inspect.custom] = () => "12 45 78 01 34 67 90 23";
|
||
out = util.inspect(o, { compact: false, breakLength: 3 });
|
||
expect = "12 45 78 01 34 67 90 23";
|
||
assert.strictEqual(out, expect);
|
||
|
||
o[util.inspect.custom] = () => ({ a: "12 45 78 01 34 67 90 23" });
|
||
out = util.inspect(o, { compact: false, breakLength: 3 });
|
||
expect = "{\n a: '12 45 78 01 34 67 90 23'\n}";
|
||
assert.strictEqual(out, expect);
|
||
}
|
||
|
||
// Check compact indentation.
|
||
{
|
||
const typed = new Uint8Array();
|
||
typed.buffer.foo = true;
|
||
const set = new Set([[1, 2]]);
|
||
const promise = Promise.resolve([[1, set]]);
|
||
const map = new Map([[promise, typed]]);
|
||
map.set(set.values(), map.values());
|
||
|
||
let out = util.inspect(map, { compact: false, showHidden: true, depth: 9 });
|
||
let expected = [
|
||
"Map(2) {",
|
||
" Promise {",
|
||
" [",
|
||
" [",
|
||
" 1,",
|
||
" Set(1) {",
|
||
" [",
|
||
" 1,",
|
||
" 2,",
|
||
" [length]: 2",
|
||
" ]",
|
||
" },",
|
||
" [length]: 2",
|
||
" ],",
|
||
" [length]: 1",
|
||
" ]",
|
||
" } => Uint8Array(0) [",
|
||
" [BYTES_PER_ELEMENT]: 1,",
|
||
" [length]: 0,",
|
||
" [byteLength]: 0,",
|
||
" [byteOffset]: 0,",
|
||
" [buffer]: ArrayBuffer {",
|
||
" byteLength: 0,",
|
||
" foo: true",
|
||
" }",
|
||
" ],",
|
||
" [Set Iterator] {",
|
||
" [",
|
||
" 1,",
|
||
" 2,",
|
||
" [length]: 2",
|
||
" ],",
|
||
" [Symbol(Symbol.toStringTag)]: 'Set Iterator'",
|
||
" } => <ref *1> [Map Iterator] {",
|
||
" Uint8Array(0) [",
|
||
" [BYTES_PER_ELEMENT]: 1,",
|
||
" [length]: 0,",
|
||
" [byteLength]: 0,",
|
||
" [byteOffset]: 0,",
|
||
" [buffer]: ArrayBuffer {",
|
||
" byteLength: 0,",
|
||
" foo: true",
|
||
" }",
|
||
" ],",
|
||
" [Circular *1],",
|
||
" [Symbol(Symbol.toStringTag)]: 'Map Iterator'",
|
||
" }",
|
||
"}",
|
||
].join("\n");
|
||
|
||
assert.strict.equal(out, expected);
|
||
|
||
out = util.inspect(map, { compact: 2, showHidden: true, depth: 9 });
|
||
|
||
expected = [
|
||
"Map(2) {",
|
||
" Promise {\n" + " [",
|
||
" [",
|
||
" 1,",
|
||
" Set(1) { [ 1, 2, [length]: 2 ] },",
|
||
" [length]: 2",
|
||
" ],",
|
||
" [length]: 1",
|
||
" ]",
|
||
" } => Uint8Array(0) [",
|
||
" [BYTES_PER_ELEMENT]: 1,",
|
||
" [length]: 0,",
|
||
" [byteLength]: 0,",
|
||
" [byteOffset]: 0,",
|
||
" [buffer]: ArrayBuffer { byteLength: 0, foo: true }",
|
||
" ],",
|
||
" [Set Iterator] {\n" + " [ 1, 2, [length]: 2 ],",
|
||
" [Symbol(Symbol.toStringTag)]: 'Set Iterator'\n" +
|
||
" } => <ref *1> [Map Iterator] {\n" +
|
||
" Uint8Array(0) [",
|
||
" [BYTES_PER_ELEMENT]: 1,",
|
||
" [length]: 0,",
|
||
" [byteLength]: 0,",
|
||
" [byteOffset]: 0,",
|
||
" [buffer]: ArrayBuffer { byteLength: 0, foo: true }",
|
||
" ],",
|
||
" [Circular *1],",
|
||
" [Symbol(Symbol.toStringTag)]: 'Map Iterator'\n" + " }",
|
||
"}",
|
||
].join("\n");
|
||
|
||
assert.strict.equal(out, expected);
|
||
|
||
out = util.inspect(map, {
|
||
showHidden: true,
|
||
depth: 9,
|
||
breakLength: 4,
|
||
compact: true,
|
||
});
|
||
|
||
expected = [
|
||
"Map(2) {",
|
||
" Promise {",
|
||
" [ [ 1,",
|
||
" Set(1) {",
|
||
" [ 1,",
|
||
" 2,",
|
||
" [length]: 2 ] },",
|
||
" [length]: 2 ],",
|
||
" [length]: 1 ] } => Uint8Array(0) [",
|
||
" [BYTES_PER_ELEMENT]: 1,",
|
||
" [length]: 0,",
|
||
" [byteLength]: 0,",
|
||
" [byteOffset]: 0,",
|
||
" [buffer]: ArrayBuffer {",
|
||
" byteLength: 0,",
|
||
" foo: true } ],",
|
||
" [Set Iterator] {",
|
||
" [ 1,",
|
||
" 2,",
|
||
" [length]: 2 ],",
|
||
" [Symbol(Symbol.toStringTag)]:",
|
||
" 'Set Iterator' } => <ref *1> [Map Iterator] {",
|
||
" Uint8Array(0) [",
|
||
" [BYTES_PER_ELEMENT]: 1,",
|
||
" [length]: 0,",
|
||
" [byteLength]: 0,",
|
||
" [byteOffset]: 0,",
|
||
" [buffer]: ArrayBuffer {",
|
||
" byteLength: 0,",
|
||
" foo: true } ],",
|
||
" [Circular *1],",
|
||
" [Symbol(Symbol.toStringTag)]:",
|
||
" 'Map Iterator' } }",
|
||
].join("\n");
|
||
|
||
assert.strict.equal(out, expected);
|
||
}
|
||
|
||
{
|
||
// Test WeakMap && WeakSet
|
||
const obj = {};
|
||
const arr = [];
|
||
const weakMap = new WeakMap([
|
||
[obj, arr],
|
||
[arr, obj],
|
||
]);
|
||
let out = util.inspect(weakMap, { showHidden: true });
|
||
// TODO: WeakMap internals
|
||
// let expect = 'WeakMap { [ [length]: 0 ] => {}, {} => [ [length]: 0 ] }';
|
||
let expect = "WeakMap { }";
|
||
assert.strictEqual(out, expect);
|
||
|
||
out = util.inspect(weakMap);
|
||
expect = "WeakMap { <items unknown> }";
|
||
assert.strictEqual(out, expect);
|
||
|
||
out = util.inspect(weakMap, { maxArrayLength: 0, showHidden: true });
|
||
// expect = 'WeakMap { ... 2 more items }';
|
||
expect = "WeakMap { }";
|
||
assert.strictEqual(out, expect);
|
||
|
||
weakMap.extra = true;
|
||
out = util.inspect(weakMap, { maxArrayLength: 1, showHidden: true });
|
||
// It is not possible to determine the output reliable.
|
||
// expect = 'WeakMap { [ [length]: 0 ] => {}, ... 1 more item, extra: true }';
|
||
// let expectAlt = 'WeakMap { {} => [ [length]: 0 ], ... 1 more item, extra: true }';
|
||
assert(
|
||
out === "WeakMap { extra: true }", //out === expect || out === expectAlt,
|
||
`Found: "${out}"\nrather than: "WeakMap { extra: true }"`,
|
||
); //"${expect}"\nor: "${expectAlt}"`);
|
||
|
||
// Test WeakSet
|
||
arr.push(1);
|
||
const weakSet = new WeakSet([obj, arr]);
|
||
out = util.inspect(weakSet, { showHidden: true });
|
||
// TODO: WeakSet internals
|
||
// expect = 'WeakSet { [ 1, [length]: 1 ], {} }';
|
||
expect = "WeakSet { }";
|
||
assert.strictEqual(out, expect);
|
||
|
||
out = util.inspect(weakSet);
|
||
expect = "WeakSet { <items unknown> }";
|
||
assert.strictEqual(out, expect);
|
||
|
||
out = util.inspect(weakSet, { maxArrayLength: -2, showHidden: true });
|
||
//expect = 'WeakSet { ... 2 more items }';
|
||
expect = "WeakSet { }";
|
||
assert.strictEqual(out, expect);
|
||
|
||
weakSet.extra = true;
|
||
out = util.inspect(weakSet, { maxArrayLength: 1, showHidden: true });
|
||
// It is not possible to determine the output reliable.
|
||
// expect = 'WeakSet { {}, ... 1 more item, extra: true }';
|
||
// expectAlt = 'WeakSet { [ 1, [length]: 1 ], ... 1 more item, extra: true }';
|
||
assert(
|
||
out === "WeakSet { extra: true }", //out === expect || out === expectAlt,
|
||
`Found: "${out}"\nrather than: "WeakSet { extra: true }"`,
|
||
); //"${expect}"\nor: "${expectAlt}"`);
|
||
// Keep references to the WeakMap entries, otherwise they could be GCed too early.
|
||
assert(obj && arr);
|
||
}
|
||
|
||
{
|
||
// Test argument objects.
|
||
const args = (function () {
|
||
return arguments;
|
||
})("a");
|
||
assert.strictEqual(util.inspect(args), "[Arguments] { '0': 'a' }");
|
||
}
|
||
});
|
||
|
||
test("util.inspect stack overflow handling", () => {
|
||
// Test that a long linked list can be inspected without throwing an error.
|
||
const list = {};
|
||
let head = list;
|
||
// A linked list of length 100k should be inspectable in some way, even though
|
||
// the real cutoff value is much lower than 100k.
|
||
for (let i = 0; i < 10000; i++) head = head.next = {};
|
||
assert.strictEqual(util.inspect(list), "{ next: { next: { next: [Object] } } }");
|
||
const longList = util.inspect(list, { depth: Infinity });
|
||
const match = longList.match(/next/g);
|
||
//? The current limit is set to a fixed 1000, as higher values cause
|
||
//? the creation of unmanageably large strings which can crash or hang.
|
||
//? For comparison, despite their test checking for up to 10000,
|
||
//? Node will generally cutoff with a stack overflow at around 900.
|
||
assert(match.length > 500 && match.length < 10000);
|
||
assert(longList.includes("[Object: Inspection interrupted prematurely. Maximum call stack size exceeded.]"));
|
||
});
|
||
|
||
test("no assertion failures 3", () => {
|
||
// Do not escape single quotes if no double quote or backtick is present.
|
||
assert.strictEqual(util.inspect("'"), '"\'"');
|
||
assert.strictEqual(util.inspect("\"'"), "`\"'`");
|
||
assert.strictEqual(util.inspect("\"'${a}"), "'\"\\'${a}'");
|
||
|
||
// Errors should visualize as much information as possible.
|
||
// If the name is not included in the stack, visualize it as well.
|
||
[
|
||
[class Foo extends TypeError {}, "test"],
|
||
[class Foo extends TypeError {}, undefined],
|
||
[class BarError extends Error {}, "test"],
|
||
[
|
||
class BazError extends Error {
|
||
get name() {
|
||
return "BazError";
|
||
}
|
||
},
|
||
undefined,
|
||
],
|
||
].forEach(([Class, message], i) => {
|
||
const foo = new Class(message);
|
||
const extra = Class.name.includes("Error") ? "" : ` [${foo.name}]`;
|
||
// TODO: Bun messes with `Error.stack` and this causes this to fail
|
||
// assert(
|
||
// util.inspect(foo).startsWith(`${Class.name}${extra}${message ? `: ${message}` : "\n"}`),
|
||
// util.inspect(foo) + "\n...did not start with: " + `${Class.name}${extra}${message ? `: ${message}` : "\n"}`,
|
||
// );
|
||
Object.defineProperty(foo, Symbol.toStringTag, {
|
||
value: "WOW",
|
||
writable: true,
|
||
configurable: true,
|
||
});
|
||
const stack = foo.stack;
|
||
foo.stack = "This is a stack";
|
||
assert(
|
||
util.inspect(foo).startsWith("[This is a stack]"),
|
||
`Expected to start with: "[This is a stack]"\nFound: "${util.inspect(foo)}"`,
|
||
);
|
||
foo.stack = stack;
|
||
// TODO: Bun messes with `Error.stack` and this causes this to fail
|
||
// assert(
|
||
// util.inspect(foo).startsWith(`${Class.name} [WOW]${extra}${message ? `: ${message}` : "\n"}`),
|
||
// util.inspect(foo),
|
||
// );
|
||
Object.setPrototypeOf(foo, null);
|
||
assert(
|
||
util.inspect(foo).startsWith(
|
||
// TODO: null prototypes
|
||
// `[${name}: null prototype] [WOW]${message ? `: ${message}` : '\n'}`
|
||
"[Object: null prototype] [WOW] {",
|
||
),
|
||
util.inspect(foo),
|
||
);
|
||
foo.bar = true;
|
||
delete foo[Symbol.toStringTag];
|
||
let tmp = util.inspect(foo);
|
||
assert(
|
||
tmp.startsWith(
|
||
// TODO: null prototypes
|
||
// `[${name}: null prototype]${message ? `: ${message}` : '\n'}`),
|
||
"[Error: null prototype] {",
|
||
) && tmp.includes("bar: true"),
|
||
tmp,
|
||
);
|
||
foo.stack = "This is a stack";
|
||
tmp = util.inspect(foo);
|
||
assert(
|
||
tmp.startsWith(
|
||
// TODO: null prototypes
|
||
// '[[Error: null prototype]: This is a stack] { bar: true }'
|
||
"[Error: null prototype] {",
|
||
) && tmp.includes("bar: true"),
|
||
tmp,
|
||
);
|
||
foo.stack = stack.split("\n")[0];
|
||
tmp = util.inspect(foo);
|
||
assert(
|
||
tmp.startsWith(
|
||
// TODO: null prototypes
|
||
// `[[${name}: null prototype]${message ? `:\n ${message}` : ''}] { bar: true }`
|
||
"[Error: null prototype] {",
|
||
) && tmp.includes("bar: true"),
|
||
tmp,
|
||
);
|
||
});
|
||
|
||
// Verify that classes are properly inspected.
|
||
[
|
||
// The whitespace is intentional.
|
||
[class {}, "[class (anonymous)]"],
|
||
[
|
||
class extends Error {
|
||
log() {}
|
||
},
|
||
"[class (anonymous) extends Error]",
|
||
],
|
||
[
|
||
class A {
|
||
constructor(a) {
|
||
this.a = a;
|
||
}
|
||
log() {
|
||
return this.a;
|
||
}
|
||
},
|
||
"[class A]",
|
||
],
|
||
[
|
||
class // Random { // comments /* */ are part of the toString() result
|
||
äß /**/
|
||
extends /*{*/ TypeError {},
|
||
"[class äß extends TypeError]",
|
||
],
|
||
/* The whitespace and new line is intended! */
|
||
// Foobar !!!
|
||
[
|
||
class X extends /****/ Error {
|
||
// More comments
|
||
},
|
||
"[class X extends Error]",
|
||
],
|
||
].forEach(([clazz, string]) => {
|
||
const inspected = util.inspect(clazz);
|
||
assert.strictEqual(inspected, string);
|
||
Object.defineProperty(clazz, Symbol.toStringTag, {
|
||
value: "Woohoo",
|
||
});
|
||
const parts = inspected.slice(0, -1).split(" ");
|
||
const [, name, ...rest] = parts;
|
||
rest.unshift("[Woohoo]");
|
||
if (rest.length) {
|
||
rest[rest.length - 1] += "]";
|
||
}
|
||
assert.strictEqual(util.inspect(clazz), ["[class", name, ...rest].join(" "));
|
||
if (rest.length) {
|
||
rest[rest.length - 1] = rest[rest.length - 1].slice(0, -1);
|
||
rest.length = 1;
|
||
}
|
||
Object.setPrototypeOf(clazz, Map.prototype);
|
||
assert.strictEqual(util.inspect(clazz), ["[class", name, "[Map]", ...rest].join(" ") + "]");
|
||
Object.setPrototypeOf(clazz, null);
|
||
assert.strictEqual(util.inspect(clazz), ["[class", name, ...rest, "extends [null prototype]]"].join(" "));
|
||
Object.defineProperty(clazz, "name", { value: "Foo" });
|
||
const res = ["[class", "Foo", ...rest, "extends [null prototype]]"].join(" ");
|
||
assert.strictEqual(util.inspect(clazz), res);
|
||
clazz.foo = true;
|
||
assert.strictEqual(util.inspect(clazz), `${res} { foo: true }`);
|
||
});
|
||
|
||
// "class" properties should not be detected as "class".
|
||
{
|
||
let obj = { class() {} };
|
||
assert.strictEqual(util.inspect(obj), "{ class: [Function: class] }");
|
||
obj = { class: () => {} };
|
||
assert.strictEqual(util.inspect(obj), "{ class: [Function: class] }");
|
||
obj = { ["class Foo {}"]() {} };
|
||
assert.strictEqual(util.inspect(obj), "{ 'class Foo {}': [Function: class Foo {}] }");
|
||
function Foo() {}
|
||
Object.defineProperty(Foo, "toString", { value: () => "class Foo {}" });
|
||
assert.strictEqual(util.inspect(Foo), "[Function: Foo]");
|
||
function fn() {}
|
||
Object.defineProperty(fn, "name", { value: "class Foo {}" });
|
||
assert.strictEqual(util.inspect(fn), "[Function: class Foo {}]");
|
||
}
|
||
|
||
// Verify that throwing in valueOf and toString still produces nice results.
|
||
[
|
||
[new String(55), "[String: '55']"],
|
||
[new Boolean(true), "[Boolean: true]"],
|
||
[new Number(55), "[Number: 55]"],
|
||
[Object(BigInt(55)), "[BigInt: 55n]"],
|
||
[Object(Symbol("foo")), "[Symbol: Symbol(foo)]"],
|
||
[function () {}, "[Function (anonymous)]"],
|
||
[() => {}, "[Function (anonymous)]"],
|
||
[[1, 2], "[ 1, 2 ]"],
|
||
[[, , 5, , , ,], "[ <2 empty items>, 5, <3 empty items> ]"],
|
||
[{ a: 5 }, "{ a: 5 }"],
|
||
[new Set([1, 2]), "Set(2) { 1, 2 }"],
|
||
[new Map([[1, 2]]), "Map(1) { 1 => 2 }"],
|
||
[new Set([1, 2]).entries(), "[Set Entries] { [ 1, 1 ], [ 2, 2 ] }"],
|
||
[new Map([[1, 2]]).keys(), "[Map Iterator] { 1 }"],
|
||
[new Date(2000), "1970-01-01T00:00:02.000Z"],
|
||
[new Uint8Array(2), "Uint8Array(2) [ 0, 0 ]"],
|
||
[new Promise(resolve => setTimeout(resolve, 10)), "Promise { <pending> }"],
|
||
[new WeakSet(), "WeakSet { <items unknown> }"],
|
||
[new WeakMap(), "WeakMap { <items unknown> }"],
|
||
[/foobar/g, "/foobar/g"],
|
||
].forEach(([value, expected]) => {
|
||
Object.defineProperty(value, "valueOf", {
|
||
get() {
|
||
throw new Error("valueOf");
|
||
},
|
||
});
|
||
Object.defineProperty(value, "toString", {
|
||
get() {
|
||
throw new Error("toString");
|
||
},
|
||
});
|
||
assert.strictEqual(util.inspect(value), expected);
|
||
value.foo = "bar";
|
||
assert.notStrictEqual(util.inspect(value), expected);
|
||
delete value.foo;
|
||
value[Symbol("foo")] = "yeah";
|
||
assert.notStrictEqual(util.inspect(value), expected);
|
||
});
|
||
|
||
// Verify that having no prototype still produces nice results.
|
||
[
|
||
[[1, 3, 4], "[Array(3): null prototype] [ 1, 3, 4 ]"],
|
||
[/foobar/, "[RegExp: null prototype] /foobar/"],
|
||
[new Set([1, 2]), "[Set(2): null prototype] { 1, 2 }"],
|
||
[new Map([[1, 2]]), "[Map(1): null prototype] { 1 => 2 }"],
|
||
[new Promise(resolve => setTimeout(resolve, 10)), "[Promise: null prototype] { <pending> }"],
|
||
[new WeakSet(), "[WeakSet: null prototype] { <items unknown> }"],
|
||
[new WeakMap(), "[WeakMap: null prototype] { <items unknown> }"],
|
||
[new Uint8Array(2), "[Uint8Array(2): null prototype] [ 0, 0 ]"],
|
||
[new Uint16Array(2), "[Uint16Array(2): null prototype] [ 0, 0 ]"],
|
||
[new Uint32Array(2), "[Uint32Array(2): null prototype] [ 0, 0 ]"],
|
||
[new Int8Array(2), "[Int8Array(2): null prototype] [ 0, 0 ]"],
|
||
[new Int16Array(2), "[Int16Array(2): null prototype] [ 0, 0 ]"],
|
||
[new Int32Array(2), "[Int32Array(2): null prototype] [ 0, 0 ]"],
|
||
[new Float16Array(2), "[Float16Array(2): null prototype] [ 0, 0 ]"],
|
||
[new Float32Array(2), "[Float32Array(2): null prototype] [ 0, 0 ]"],
|
||
[new Float64Array(2), "[Float64Array(2): null prototype] [ 0, 0 ]"],
|
||
[new BigInt64Array(2), "[BigInt64Array(2): null prototype] [ 0n, 0n ]"],
|
||
[new BigUint64Array(2), "[BigUint64Array(2): null prototype] [ 0n, 0n ]"],
|
||
[
|
||
new ArrayBuffer(4),
|
||
"[ArrayBuffer: null prototype] {\n [Uint8Contents]: <00 00 00 00>,\n byteLength: undefined\n}",
|
||
],
|
||
[
|
||
new DataView(new ArrayBuffer(4)),
|
||
"[DataView: null prototype] {\n byteLength: undefined,\n byteOffset: undefined,\n buffer: undefined\n}",
|
||
],
|
||
[
|
||
new SharedArrayBuffer(2),
|
||
"[SharedArrayBuffer: null prototype] {\n [Uint8Contents]: <00 00>,\n byteLength: undefined\n}",
|
||
],
|
||
[new Date("Sun, 14 Feb 2010 11:48:40 GMT"), "[Date: null prototype] 2010-02-14T11:48:40.000Z"],
|
||
].forEach(([value, expected]) => {
|
||
assert.strictEqual(util.inspect(Object.setPrototypeOf(value, null)), expected);
|
||
value.foo = "bar";
|
||
assert.notStrictEqual(util.inspect(value), expected);
|
||
delete value.foo;
|
||
value[Symbol("foo")] = "yeah";
|
||
assert.notStrictEqual(util.inspect(value), expected);
|
||
});
|
||
|
||
// Verify that subclasses with and without prototype produce nice results.
|
||
[
|
||
[RegExp, ["foobar", "g"], "/foobar/g"],
|
||
[WeakSet, [[{}]], "{ <items unknown> }"],
|
||
[WeakMap, [[[{}, {}]]], "{ <items unknown> }"],
|
||
[BigInt64Array, [10], "[\n 0n, 0n, 0n, 0n, 0n,\n 0n, 0n, 0n, 0n, 0n\n]"],
|
||
[Date, ["Sun, 14 Feb 2010 11:48:40 GMT"], "2010-02-14T11:48:40.000Z"],
|
||
[Date, ["invalid_date"], "Invalid Date"],
|
||
].forEach(([base, input, rawExpected]) => {
|
||
class Foo extends base {}
|
||
const value = new Foo(...input);
|
||
const symbol = value[Symbol.toStringTag];
|
||
const size = base.name.includes("Array") ? `(${input[0]})` : "";
|
||
const expected = `Foo${size} ${symbol ? `[${symbol}] ` : ""}${rawExpected}`;
|
||
const expectedWithoutProto = `[${base.name}${size}: null prototype] ${rawExpected}`;
|
||
assert.strictEqual(util.inspect(value), expected);
|
||
value.foo = "bar";
|
||
assert.notStrictEqual(util.inspect(value), expected);
|
||
delete value.foo;
|
||
assert.strictEqual(util.inspect(Object.setPrototypeOf(value, null)), expectedWithoutProto);
|
||
value.foo = "bar";
|
||
let res = util.inspect(value);
|
||
assert.notStrictEqual(res, expectedWithoutProto);
|
||
assert.match(res, /foo: 'bar'/);
|
||
delete value.foo;
|
||
value[Symbol("foo")] = "yeah";
|
||
res = util.inspect(value);
|
||
assert.notStrictEqual(res, expectedWithoutProto);
|
||
assert.match(res, /\[Symbol\(foo\)]: 'yeah'/);
|
||
});
|
||
|
||
assert.strictEqual(inspect(1n), "1n");
|
||
assert.strictEqual(inspect(Object(-1n)), "[BigInt: -1n]");
|
||
assert.strictEqual(inspect(Object(13n)), "[BigInt: 13n]");
|
||
assert.strictEqual(inspect(new BigInt64Array([0n])), "BigInt64Array(1) [ 0n ]");
|
||
assert.strictEqual(inspect(new BigUint64Array([0n])), "BigUint64Array(1) [ 0n ]");
|
||
|
||
// Verify non-enumerable keys get escaped.
|
||
{
|
||
const obj = {};
|
||
Object.defineProperty(obj, "Non\nenumerable\tkey", { value: true });
|
||
assert.strictEqual(util.inspect(obj, { showHidden: true }), "{ [Non\\nenumerable\\tkey]: true }");
|
||
}
|
||
|
||
// Check for special colors.
|
||
{
|
||
const special = inspect.colors[inspect.styles.special];
|
||
const string = inspect.colors[inspect.styles.string];
|
||
|
||
assert.strictEqual(
|
||
inspect(new WeakSet(), { colors: true }),
|
||
`WeakSet { \u001b[${special[0]}m<items unknown>\u001b[${special[1]}m }`,
|
||
);
|
||
assert.strictEqual(
|
||
inspect(new WeakMap(), { colors: true }),
|
||
`WeakMap { \u001b[${special[0]}m<items unknown>\u001b[${special[1]}m }`,
|
||
);
|
||
assert.strictEqual(
|
||
inspect(new Promise(() => {}), { colors: true }),
|
||
`Promise { \u001b[${special[0]}m<pending>\u001b[${special[1]}m }`,
|
||
);
|
||
|
||
const rejection = Promise.reject("Oh no!");
|
||
assert.strictEqual(
|
||
inspect(rejection, { colors: true }),
|
||
`Promise { \u001b[${special[0]}m<rejected>\u001b[${special[1]}m ` +
|
||
`\u001b[${string[0]}m'Oh no!'\u001b[${string[1]}m }`,
|
||
);
|
||
rejection.catch(() => {});
|
||
|
||
// Verify that aliases do not show up as key while checking `inspect.colors`.
|
||
const colors = Object.keys(inspect.colors);
|
||
const aliases = Object.getOwnPropertyNames(inspect.colors).filter(c => !colors.includes(c));
|
||
assert(!colors.includes("grey"), colors);
|
||
assert(colors.includes("gray"), colors);
|
||
// Verify that all aliases are correctly mapped.
|
||
for (const alias of aliases) {
|
||
assert(Array.isArray(inspect.colors[alias]));
|
||
}
|
||
// Check consistent naming.
|
||
["black", "red", "green", "yellow", "blue", "magenta", "cyan", "white"].forEach((color, i) => {
|
||
assert.deepStrictEqual(inspect.colors[color], [30 + i, 39]);
|
||
assert.deepStrictEqual(inspect.colors[`${color}Bright`], [90 + i, 39]);
|
||
const bgColor = `bg${color[0].toUpperCase()}${color.slice(1)}`;
|
||
assert.deepStrictEqual(inspect.colors[bgColor], [40 + i, 49]);
|
||
assert.deepStrictEqual(inspect.colors[`${bgColor}Bright`], [100 + i, 49]);
|
||
});
|
||
|
||
// Unknown colors are handled gracefully:
|
||
const stringStyle = inspect.styles.string;
|
||
inspect.styles.string = "UNKNOWN";
|
||
assert.strictEqual(inspect("foobar", { colors: true }), "'foobar'");
|
||
inspect.styles.string = stringStyle;
|
||
}
|
||
|
||
assert.strictEqual(inspect([1, 3, 2], { sorted: true }), inspect([1, 3, 2]));
|
||
assert.strictEqual(inspect({ c: 3, a: 1, b: 2 }, { sorted: true }), "{ a: 1, b: 2, c: 3 }");
|
||
assert.strictEqual(
|
||
inspect(
|
||
{ a200: 4, a100: 1, a102: 3, a101: 2 },
|
||
{
|
||
sorted(a, b) {
|
||
return b.localeCompare(a);
|
||
},
|
||
},
|
||
),
|
||
"{ a200: 4, a102: 3, a101: 2, a100: 1 }",
|
||
);
|
||
|
||
// Non-indices array properties are sorted as well.
|
||
{
|
||
const arr = [3, 2, 1];
|
||
arr.b = 2;
|
||
arr.c = 3;
|
||
arr.a = 1;
|
||
arr[Symbol("b")] = true;
|
||
arr[Symbol("a")] = false;
|
||
assert.strictEqual(
|
||
inspect(arr, { sorted: true }),
|
||
"[ 3, 2, 1, [Symbol(a)]: false, [Symbol(b)]: true, a: 1, b: 2, c: 3 ]",
|
||
);
|
||
}
|
||
|
||
// Manipulate the prototype in weird ways.
|
||
{
|
||
let obj = { a: true };
|
||
let value = (function () {
|
||
return function () {};
|
||
})();
|
||
Object.setPrototypeOf(value, null);
|
||
Object.setPrototypeOf(obj, value);
|
||
assert.strictEqual(util.inspect(obj), "Object <[Function (null prototype) (anonymous)]> { a: true }");
|
||
assert.strictEqual(
|
||
util.inspect(obj, { colors: true }),
|
||
"Object <\u001b[36m[Function (null prototype) (anonymous)]\u001b[39m> " + "{ a: \u001b[33mtrue\u001b[39m }",
|
||
);
|
||
|
||
obj = { a: true };
|
||
value = [];
|
||
Object.setPrototypeOf(value, null);
|
||
Object.setPrototypeOf(obj, value);
|
||
assert.strictEqual(util.inspect(obj), "Object <[Array(0): null prototype] []> { a: true }");
|
||
|
||
function StorageObject() {}
|
||
StorageObject.prototype = { __proto__: null };
|
||
assert.strictEqual(
|
||
util.inspect(new StorageObject()),
|
||
// TODO: null prototypes
|
||
// 'StorageObject <[Object: null prototype] {}> {}'
|
||
"Object <[Object: null prototype] {}> {}",
|
||
);
|
||
|
||
obj = [1, 2, 3];
|
||
Object.setPrototypeOf(obj, Number.prototype);
|
||
assert.strictEqual(inspect(obj), "Number { '0': 1, '1': 2, '2': 3 }");
|
||
|
||
Object.setPrototypeOf(obj, { __proto__: null });
|
||
assert.strictEqual(inspect(obj), "Array <[Object: null prototype] {}> { '0': 1, '1': 2, '2': 3 }");
|
||
|
||
StorageObject.prototype = { __proto__: null };
|
||
Object.setPrototypeOf(StorageObject.prototype, { __proto__: null });
|
||
Object.setPrototypeOf(Object.getPrototypeOf(StorageObject.prototype), { __proto__: null });
|
||
assert.strictEqual(
|
||
util.inspect(new StorageObject()),
|
||
// TODO: null prototypes
|
||
// 'StorageObject <Object <Object <[Object: null prototype] {}>>> {}'
|
||
"Object <Object <Object <[Object: null prototype] {}>>> {}",
|
||
);
|
||
assert.strictEqual(
|
||
util.inspect(new StorageObject(), { depth: 1 }),
|
||
// TODO: null prototypes
|
||
// 'StorageObject <Object <Object <Complex prototype>>> {}'
|
||
"Object <Object <Object <Complex prototype>>> {}",
|
||
);
|
||
}
|
||
|
||
// Check that the fallback always works.
|
||
{
|
||
const obj = new Set([1, 2]);
|
||
const iterator = obj[Symbol.iterator];
|
||
Object.setPrototypeOf(obj, null);
|
||
Object.defineProperty(obj, Symbol.iterator, {
|
||
value: iterator,
|
||
configurable: true,
|
||
});
|
||
assert.strictEqual(util.inspect(obj), "[Set(2): null prototype] { 1, 2 }");
|
||
Object.defineProperty(obj, Symbol.iterator, {
|
||
value: true,
|
||
configurable: true,
|
||
});
|
||
Object.defineProperty(obj, "size", {
|
||
value: NaN,
|
||
configurable: true,
|
||
enumerable: true,
|
||
});
|
||
assert.strictEqual(util.inspect(obj), "[Set(2): null prototype] { 1, 2, size: NaN }");
|
||
}
|
||
|
||
// Check the getter option.
|
||
{
|
||
let foo = 1;
|
||
const get = {
|
||
get foo() {
|
||
return foo;
|
||
},
|
||
};
|
||
const getset = {
|
||
get foo() {
|
||
return foo;
|
||
},
|
||
set foo(val) {
|
||
foo = val;
|
||
},
|
||
get inc() {
|
||
return ++foo;
|
||
},
|
||
};
|
||
const thrower = {
|
||
get foo() {
|
||
throw new Error("Oops");
|
||
},
|
||
};
|
||
assert.strictEqual(
|
||
inspect(get, { getters: true, colors: true }),
|
||
"{ foo: \u001b[36m[Getter:\u001b[39m " + "\u001b[33m1\u001b[39m\u001b[36m]\u001b[39m }",
|
||
);
|
||
assert.strictEqual(inspect(thrower, { getters: true }), "{ foo: [Getter: <Inspection threw (Oops)>] }");
|
||
assert.strictEqual(inspect(getset, { getters: true }), "{ foo: [Getter/Setter: 1], inc: [Getter: 2] }");
|
||
assert.strictEqual(inspect(getset, { getters: "get" }), "{ foo: [Getter/Setter], inc: [Getter: 3] }");
|
||
assert.strictEqual(inspect(getset, { getters: "set" }), "{ foo: [Getter/Setter: 3], inc: [Getter] }");
|
||
getset.foo = new Set([[{ a: true }, 2, {}], "foobar", { x: 1 }]);
|
||
assert.strictEqual(
|
||
inspect(getset, { getters: true }),
|
||
"{\n foo: [Getter/Setter] Set(3) { [ [Object], 2, {} ], " + "'foobar', { x: 1 } },\n inc: [Getter: NaN]\n}",
|
||
);
|
||
}
|
||
|
||
// Check compact number mode.
|
||
{
|
||
let obj = {
|
||
a: {
|
||
b: {
|
||
x: 5,
|
||
c: {
|
||
x: "10000000000000000 00000000000000000 ".repeat(1e1),
|
||
d: 2,
|
||
e: 3,
|
||
},
|
||
},
|
||
},
|
||
b: [1, 2, [1, 2, { a: 1, b: 2, c: 3 }]],
|
||
c: ["foo", 4, 444444],
|
||
d: Array.from({ length: 101 }).map((e, i) => {
|
||
return i % 2 === 0 ? i * i : i;
|
||
}),
|
||
e: Array(6).fill("foobar"),
|
||
f: Array(9).fill("foobar"),
|
||
g: Array(21).fill("foobar baz"),
|
||
h: [100].concat(Array.from({ length: 9 }).map((e, n) => n)),
|
||
long: Array(9).fill("This text is too long for grouping!"),
|
||
};
|
||
|
||
let out = util.inspect(obj, { compact: 3, depth: 10, breakLength: 60 });
|
||
let expected = [
|
||
"{",
|
||
" a: {",
|
||
" b: {",
|
||
" x: 5,",
|
||
" c: {",
|
||
" x: '10000000000000000 00000000000000000 10000000000000000 " +
|
||
"00000000000000000 10000000000000000 00000000000000000 " +
|
||
"10000000000000000 00000000000000000 10000000000000000 " +
|
||
"00000000000000000 10000000000000000 00000000000000000 " +
|
||
"10000000000000000 00000000000000000 10000000000000000 " +
|
||
"00000000000000000 10000000000000000 00000000000000000 " +
|
||
"10000000000000000 00000000000000000 ',",
|
||
" d: 2,",
|
||
" e: 3",
|
||
" }",
|
||
" }",
|
||
" },",
|
||
" b: [ 1, 2, [ 1, 2, { a: 1, b: 2, c: 3 } ] ],",
|
||
" c: [ 'foo', 4, 444444 ],",
|
||
" d: [",
|
||
" 0, 1, 4, 3, 16, 5, 36, 7, 64,",
|
||
" 9, 100, 11, 144, 13, 196, 15, 256, 17,",
|
||
" 324, 19, 400, 21, 484, 23, 576, 25, 676,",
|
||
" 27, 784, 29, 900, 31, 1024, 33, 1156, 35,",
|
||
" 1296, 37, 1444, 39, 1600, 41, 1764, 43, 1936,",
|
||
" 45, 2116, 47, 2304, 49, 2500, 51, 2704, 53,",
|
||
" 2916, 55, 3136, 57, 3364, 59, 3600, 61, 3844,",
|
||
" 63, 4096, 65, 4356, 67, 4624, 69, 4900, 71,",
|
||
" 5184, 73, 5476, 75, 5776, 77, 6084, 79, 6400,",
|
||
" 81, 6724, 83, 7056, 85, 7396, 87, 7744, 89,",
|
||
" 8100, 91, 8464, 93, 8836, 95, 9216, 97, 9604,",
|
||
" 99,",
|
||
" ... 1 more item",
|
||
" ],",
|
||
" e: [",
|
||
" 'foobar',",
|
||
" 'foobar',",
|
||
" 'foobar',",
|
||
" 'foobar',",
|
||
" 'foobar',",
|
||
" 'foobar'",
|
||
" ],",
|
||
" f: [",
|
||
" 'foobar', 'foobar',",
|
||
" 'foobar', 'foobar',",
|
||
" 'foobar', 'foobar',",
|
||
" 'foobar', 'foobar',",
|
||
" 'foobar'",
|
||
" ],",
|
||
" g: [",
|
||
" 'foobar baz', 'foobar baz',",
|
||
" 'foobar baz', 'foobar baz',",
|
||
" 'foobar baz', 'foobar baz',",
|
||
" 'foobar baz', 'foobar baz',",
|
||
" 'foobar baz', 'foobar baz',",
|
||
" 'foobar baz', 'foobar baz',",
|
||
" 'foobar baz', 'foobar baz',",
|
||
" 'foobar baz', 'foobar baz',",
|
||
" 'foobar baz', 'foobar baz',",
|
||
" 'foobar baz', 'foobar baz',",
|
||
" 'foobar baz'",
|
||
" ],",
|
||
" h: [",
|
||
" 100, 0, 1, 2, 3,",
|
||
" 4, 5, 6, 7, 8",
|
||
" ],",
|
||
" long: [",
|
||
" 'This text is too long for grouping!',",
|
||
" 'This text is too long for grouping!',",
|
||
" 'This text is too long for grouping!',",
|
||
" 'This text is too long for grouping!',",
|
||
" 'This text is too long for grouping!',",
|
||
" 'This text is too long for grouping!',",
|
||
" 'This text is too long for grouping!',",
|
||
" 'This text is too long for grouping!',",
|
||
" 'This text is too long for grouping!'",
|
||
" ]",
|
||
"}",
|
||
].join("\n");
|
||
|
||
assert.strictEqual(out, expected);
|
||
|
||
obj = [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 123456789];
|
||
|
||
out = util.inspect(obj, { compact: 3 });
|
||
|
||
expected = [
|
||
"[",
|
||
" 1, 1, 1, 1,",
|
||
" 1, 1, 1, 1,",
|
||
" 1, 1, 1, 1,",
|
||
" 1, 1, 1, 1,",
|
||
" 1, 1, 1, 1,",
|
||
" 1, 1, 1, 1,",
|
||
" 1, 1, 123456789",
|
||
"]",
|
||
].join("\n");
|
||
|
||
assert.strictEqual(out, expected);
|
||
|
||
// Unicode support. あ has a length of one and a width of two.
|
||
obj = ["123", "123", "123", "123", "あああ", "123", "123", "123", "123", "あああ"];
|
||
|
||
out = util.inspect(obj, { compact: 3 });
|
||
|
||
expected = [
|
||
"[",
|
||
" '123', '123',",
|
||
" '123', '123',",
|
||
" 'あああ', '123',",
|
||
" '123', '123',",
|
||
" '123', 'あああ'",
|
||
"]",
|
||
].join("\n");
|
||
|
||
assert.strictEqual(out, expected);
|
||
|
||
// Array grouping should prevent lining up outer elements on a single line.
|
||
obj = [[[1, 2, 3, 4, 5, 6, 7, 8, 9]]];
|
||
|
||
out = util.inspect(obj, { compact: 3 });
|
||
|
||
expected = ["[", " [", " [", " 1, 2, 3, 4, 5,", " 6, 7, 8, 9", " ]", " ]", "]"].join("\n");
|
||
|
||
assert.strictEqual(out, expected);
|
||
|
||
// Verify that array grouping and line consolidation does not happen together.
|
||
obj = {
|
||
a: {
|
||
b: {
|
||
x: 5,
|
||
c: {
|
||
d: 2,
|
||
e: 3,
|
||
},
|
||
},
|
||
},
|
||
b: Array.from({ length: 9 }).map((e, n) => {
|
||
return n % 2 === 0 ? "foobar" : "baz";
|
||
}),
|
||
};
|
||
|
||
out = util.inspect(obj, { compact: 1, breakLength: Infinity, colors: true });
|
||
|
||
expected = [
|
||
"{",
|
||
" a: {",
|
||
" b: { x: \u001b[33m5\u001b[39m, c: \u001b[36m[Object]\u001b[39m }",
|
||
" },",
|
||
" b: [",
|
||
" \u001b[32m'foobar'\u001b[39m, \u001b[32m'baz'\u001b[39m,",
|
||
" \u001b[32m'foobar'\u001b[39m, \u001b[32m'baz'\u001b[39m,",
|
||
" \u001b[32m'foobar'\u001b[39m, \u001b[32m'baz'\u001b[39m,",
|
||
" \u001b[32m'foobar'\u001b[39m, \u001b[32m'baz'\u001b[39m,",
|
||
" \u001b[32m'foobar'\u001b[39m",
|
||
" ]",
|
||
"}",
|
||
].join("\n");
|
||
|
||
assert.strictEqual(out, expected);
|
||
|
||
obj = Array.from({ length: 60 }).map((e, i) => i);
|
||
out = util.inspect(obj, { compact: 1, breakLength: Infinity, colors: true });
|
||
|
||
expected = [
|
||
"[",
|
||
" \u001b[33m0\u001b[39m, \u001b[33m1\u001b[39m, \u001b[33m2\u001b[39m, \u001b[33m3\u001b[39m,",
|
||
" \u001b[33m4\u001b[39m, \u001b[33m5\u001b[39m, \u001b[33m6\u001b[39m, \u001b[33m7\u001b[39m,",
|
||
" \u001b[33m8\u001b[39m, \u001b[33m9\u001b[39m, \u001b[33m10\u001b[39m, \u001b[33m11\u001b[39m,",
|
||
" \u001b[33m12\u001b[39m, \u001b[33m13\u001b[39m, \u001b[33m14\u001b[39m, \u001b[33m15\u001b[39m,",
|
||
" \u001b[33m16\u001b[39m, \u001b[33m17\u001b[39m, \u001b[33m18\u001b[39m, \u001b[33m19\u001b[39m,",
|
||
" \u001b[33m20\u001b[39m, \u001b[33m21\u001b[39m, \u001b[33m22\u001b[39m, \u001b[33m23\u001b[39m,",
|
||
" \u001b[33m24\u001b[39m, \u001b[33m25\u001b[39m, \u001b[33m26\u001b[39m, \u001b[33m27\u001b[39m,",
|
||
" \u001b[33m28\u001b[39m, \u001b[33m29\u001b[39m, \u001b[33m30\u001b[39m, \u001b[33m31\u001b[39m,",
|
||
" \u001b[33m32\u001b[39m, \u001b[33m33\u001b[39m, \u001b[33m34\u001b[39m, \u001b[33m35\u001b[39m,",
|
||
" \u001b[33m36\u001b[39m, \u001b[33m37\u001b[39m, \u001b[33m38\u001b[39m, \u001b[33m39\u001b[39m,",
|
||
" \u001b[33m40\u001b[39m, \u001b[33m41\u001b[39m, \u001b[33m42\u001b[39m, \u001b[33m43\u001b[39m,",
|
||
" \u001b[33m44\u001b[39m, \u001b[33m45\u001b[39m, \u001b[33m46\u001b[39m, \u001b[33m47\u001b[39m,",
|
||
" \u001b[33m48\u001b[39m, \u001b[33m49\u001b[39m, \u001b[33m50\u001b[39m, \u001b[33m51\u001b[39m,",
|
||
" \u001b[33m52\u001b[39m, \u001b[33m53\u001b[39m, \u001b[33m54\u001b[39m, \u001b[33m55\u001b[39m,",
|
||
" \u001b[33m56\u001b[39m, \u001b[33m57\u001b[39m, \u001b[33m58\u001b[39m, \u001b[33m59\u001b[39m",
|
||
"]",
|
||
].join("\n");
|
||
|
||
assert.strictEqual(out, expected);
|
||
|
||
out = util.inspect([1, 2, 3, 4], { compact: 1, colors: true });
|
||
expected = "[ \u001b[33m1\u001b[39m, \u001b[33m2\u001b[39m, " + "\u001b[33m3\u001b[39m, \u001b[33m4\u001b[39m ]";
|
||
|
||
assert.strictEqual(out, expected);
|
||
|
||
obj = [
|
||
"Object",
|
||
"Function",
|
||
"Array",
|
||
"Number",
|
||
"parseFloat",
|
||
"parseInt",
|
||
"Infinity",
|
||
"NaN",
|
||
"undefined",
|
||
"Boolean",
|
||
"String",
|
||
"Symbol",
|
||
"Date",
|
||
"Promise",
|
||
"RegExp",
|
||
"Error",
|
||
"EvalError",
|
||
"RangeError",
|
||
"ReferenceError",
|
||
"SyntaxError",
|
||
"TypeError",
|
||
"URIError",
|
||
"JSON",
|
||
"Math",
|
||
"console",
|
||
"Intl",
|
||
"ArrayBuffer",
|
||
"Uint8Array",
|
||
"Int8Array",
|
||
"Uint16Array",
|
||
"Int16Array",
|
||
"Uint32Array",
|
||
"Int32Array",
|
||
"Float32Array",
|
||
"Float64Array",
|
||
"Uint8ClampedArray",
|
||
"BigUint64Array",
|
||
"BigInt64Array",
|
||
"DataView",
|
||
"Map",
|
||
"BigInt",
|
||
"Set",
|
||
"WeakMap",
|
||
"WeakSet",
|
||
"Proxy",
|
||
"Reflect",
|
||
"decodeURI",
|
||
"decodeURIComponent",
|
||
"encodeURI",
|
||
"encodeURIComponent",
|
||
"escape",
|
||
"unescape",
|
||
"eval",
|
||
"isFinite",
|
||
"isNaN",
|
||
"SharedArrayBuffer",
|
||
"Atomics",
|
||
"globalThis",
|
||
"WebAssembly",
|
||
"global",
|
||
"process",
|
||
"Buffer",
|
||
"URL",
|
||
"URLSearchParams",
|
||
"TextEncoder",
|
||
"TextDecoder",
|
||
"clearInterval",
|
||
"clearTimeout",
|
||
"setInterval",
|
||
"setTimeout",
|
||
"queueMicrotask",
|
||
"clearImmediate",
|
||
"setImmediate",
|
||
"module",
|
||
"require",
|
||
"assert",
|
||
"async_hooks",
|
||
"buffer",
|
||
"child_process",
|
||
"cluster",
|
||
"crypto",
|
||
"dgram",
|
||
"dns",
|
||
"domain",
|
||
"events",
|
||
"fs",
|
||
"http",
|
||
"http2",
|
||
"https",
|
||
"inspector",
|
||
"net",
|
||
"os",
|
||
"path",
|
||
"perf_hooks",
|
||
"punycode",
|
||
"querystring",
|
||
"readline",
|
||
"repl",
|
||
"stream",
|
||
"string_decoder",
|
||
"tls",
|
||
"trace_events",
|
||
"tty",
|
||
"url",
|
||
"v8",
|
||
"vm",
|
||
"worker_threads",
|
||
"zlib",
|
||
"_",
|
||
"_error",
|
||
"util",
|
||
"Float16Array",
|
||
];
|
||
|
||
out = util.inspect(obj, { compact: 3, breakLength: 80, maxArrayLength: 250 });
|
||
expected = [
|
||
"[",
|
||
" 'Object', 'Function', 'Array',",
|
||
" 'Number', 'parseFloat', 'parseInt',",
|
||
" 'Infinity', 'NaN', 'undefined',",
|
||
" 'Boolean', 'String', 'Symbol',",
|
||
" 'Date', 'Promise', 'RegExp',",
|
||
" 'Error', 'EvalError', 'RangeError',",
|
||
" 'ReferenceError', 'SyntaxError', 'TypeError',",
|
||
" 'URIError', 'JSON', 'Math',",
|
||
" 'console', 'Intl', 'ArrayBuffer',",
|
||
" 'Uint8Array', 'Int8Array', 'Uint16Array',",
|
||
" 'Int16Array', 'Uint32Array', 'Int32Array',",
|
||
" 'Float32Array', 'Float64Array', 'Uint8ClampedArray',",
|
||
" 'BigUint64Array', 'BigInt64Array', 'DataView',",
|
||
" 'Map', 'BigInt', 'Set',",
|
||
" 'WeakMap', 'WeakSet', 'Proxy',",
|
||
" 'Reflect', 'decodeURI', 'decodeURIComponent',",
|
||
" 'encodeURI', 'encodeURIComponent', 'escape',",
|
||
" 'unescape', 'eval', 'isFinite',",
|
||
" 'isNaN', 'SharedArrayBuffer', 'Atomics',",
|
||
" 'globalThis', 'WebAssembly', 'global',",
|
||
" 'process', 'Buffer', 'URL',",
|
||
" 'URLSearchParams', 'TextEncoder', 'TextDecoder',",
|
||
" 'clearInterval', 'clearTimeout', 'setInterval',",
|
||
" 'setTimeout', 'queueMicrotask', 'clearImmediate',",
|
||
" 'setImmediate', 'module', 'require',",
|
||
" 'assert', 'async_hooks', 'buffer',",
|
||
" 'child_process', 'cluster', 'crypto',",
|
||
" 'dgram', 'dns', 'domain',",
|
||
" 'events', 'fs', 'http',",
|
||
" 'http2', 'https', 'inspector',",
|
||
" 'net', 'os', 'path',",
|
||
" 'perf_hooks', 'punycode', 'querystring',",
|
||
" 'readline', 'repl', 'stream',",
|
||
" 'string_decoder', 'tls', 'trace_events',",
|
||
" 'tty', 'url', 'v8',",
|
||
" 'vm', 'worker_threads', 'zlib',",
|
||
" '_', '_error', 'util',",
|
||
" 'Float16Array'",
|
||
"]",
|
||
].join("\n");
|
||
|
||
assert.strictEqual(out, expected);
|
||
}
|
||
|
||
{
|
||
// TODO: don't care if invalid node internals get highlighted wrong
|
||
// See: loaders.js if you want to fix
|
||
|
||
const originalCWD = process.cwd();
|
||
|
||
process.cwd = () =>
|
||
isWindows
|
||
? "C:\\workspace\\node-test-binary-windows js-suites-%percent-encoded\\node"
|
||
: "/home/user directory/repository%encoded/node";
|
||
|
||
// Use a fake stack to verify the expected colored outcome.
|
||
const stack = [
|
||
"Error: CWD is grayed out, even cwd that are percent encoded!",
|
||
" at A.<anonymous> (/test/node_modules/foo/node_modules/bar/baz.js:2:7)",
|
||
" at Module._compile (node:internal/modules/cjs/loader:827:30)",
|
||
" at Fancy (node:vm:697:32)",
|
||
// This file is not an actual Node.js core file.
|
||
// ' at tryModuleLoad (node:internal/modules/cjs/foo:629:12)',
|
||
" at Function.Module._load (node:internal/modules/cjs/loader:621:3)",
|
||
// This file is not an actual Node.js core file.
|
||
// ' at Module.require [as weird/name] (node:internal/aaaaa/loader:735:19)',
|
||
" at require (node:internal/modules/helpers:14:16)",
|
||
" at Array.forEach (<anonymous>)",
|
||
` at ${process.cwd()}/test/parallel/test-util-inspect.js:2760:12`,
|
||
` at Object.<anonymous> (${process.cwd()}/node_modules/hyper_module/folder/file.js:2753:10)`,
|
||
" at /test/test-util-inspect.js:2239:9",
|
||
" at getActual (node:assert:592:5)",
|
||
];
|
||
const err = new Error("CWD is grayed out, even cwd that are percent encoded!");
|
||
err.stack = stack.join("\n");
|
||
if (isWindows) {
|
||
err.stack = stack.map(frame => (frame.includes("node:") ? frame : frame.replace(/\//g, "\\"))).join("\n");
|
||
}
|
||
const escapedCWD = util.inspect(process.cwd()).slice(1, -1);
|
||
util
|
||
.inspect(err, { colors: true })
|
||
.split("\n")
|
||
.forEach((line, i) => {
|
||
line = line.replace(/ \{$/, "");
|
||
if (i >= stack.length) return; //! workaround to ignore the extra error props at the end
|
||
let expected = stack[i]
|
||
.replace(/node_modules\/([^/]+)/gi, (_, m) => {
|
||
return `node_modules/\u001b[4m${m}\u001b[24m`;
|
||
})
|
||
.replace(new RegExp(`(\\(?${escapedCWD}(\\\\|/))`, "gi"), (_, m) => {
|
||
return `\x1B[90m${m}\x1B[39m`;
|
||
});
|
||
if (expected.includes(process.cwd()) && expected.endsWith(")")) {
|
||
expected = `${expected.slice(0, -1)}\x1B[90m)\x1B[39m`;
|
||
}
|
||
if (line.includes("node:")) {
|
||
if (!line.includes("foo") && !line.includes("aaa")) {
|
||
expected = `\u001b[90m${expected}\u001b[39m`;
|
||
}
|
||
} else if (isWindows) {
|
||
expected = expected.replace(/\//g, "\\");
|
||
}
|
||
assert.strictEqual(line, expected);
|
||
});
|
||
|
||
// Check ESM
|
||
//const encodedCwd = url.pathToFileURL(process.cwd());
|
||
const sl = isWindows ? "\\" : "/";
|
||
|
||
// Use a fake stack to verify the expected colored outcome.
|
||
//? Something goes wrong with these file URLs but Bun doesn't use those in errors anyway so it's fine (for now at least)
|
||
err.stack =
|
||
"Error: ESM and CJS mixed are both grayed out!\n" +
|
||
//?` at ${encodedCwd}/test/parallel/test-esm.mjs:2760:12\n` +
|
||
//?` at Object.<anonymous> (${encodedCwd}/node_modules/esm_module/folder/file.js:2753:10)\n` +
|
||
` at ${process.cwd()}${sl}test${sl}parallel${sl}test-cjs.js:2760:12\n` +
|
||
` at Object.<anonymous> (${process.cwd()}${sl}node_modules${sl}cjs_module${sl}folder${sl}file.js:2753:10)`;
|
||
|
||
let actual = util.inspect(err, { colors: true });
|
||
let expected =
|
||
"Error: ESM and CJS mixed are both grayed out!\n" +
|
||
//?` at \x1B[90m${encodedCwd}/\x1B[39mtest/parallel/test-esm.mjs:2760:12\n` +
|
||
//?` at Object.<anonymous> \x1B[90m(${encodedCwd}/\x1B[39mnode_modules/\x1B[4mesm_module\x1B[24m/folder/file.js:2753:10\x1B[90m)\x1B[39m\n` +
|
||
` at \x1B[90m${process.cwd()}${sl}\x1B[39mtest${sl}parallel${sl}test-cjs.js:2760:12\n` +
|
||
` at Object.<anonymous> \x1B[90m(${process.cwd()}${sl}\x1B[39mnode_modules${sl}\x1B[4mcjs_module\x1B[24m${sl}folder${sl}file.js:2753:10\x1B[90m)\x1B[39m`;
|
||
|
||
assert.strictEqual(actual.split(" {\n")[0], expected);
|
||
|
||
// ESM without need for encoding
|
||
process.cwd = () =>
|
||
isWindows ? "C:\\workspace\\node-test-binary-windows-js-suites\\node" : "/home/user/repository/node";
|
||
let expectedCwd = process.cwd();
|
||
if (isWindows) {
|
||
expectedCwd = `/${expectedCwd.replace(/\\/g, "/")}`;
|
||
}
|
||
// Use a fake stack to verify the expected colored outcome.
|
||
err.stack = "Error: ESM without need for encoding!\n" + ` at file://${expectedCwd}/file.js:15:15`;
|
||
|
||
actual = util.inspect(err, { colors: true });
|
||
expected = "Error: ESM without need for encoding!\n" + ` at \x1B[90mfile://${expectedCwd}/\x1B[39mfile.js:15:15`;
|
||
assert.strictEqual(actual.split(" {\n")[0], expected);
|
||
|
||
process.cwd = originalCWD;
|
||
}
|
||
|
||
// This starts to work in node 15
|
||
{
|
||
// Cross platform checks.
|
||
const err = new Error("foo");
|
||
util
|
||
.inspect(err, { colors: true })
|
||
.split("\n")
|
||
.forEach((line, i) => {
|
||
assert(i < 5 || line.startsWith("\u001b[90m"), i + " " + line);
|
||
});
|
||
}
|
||
|
||
{
|
||
// Tracing class respects inspect depth.
|
||
try {
|
||
const trace = require("trace_events").createTracing({ categories: ["fo"] });
|
||
const actualDepth0 = util.inspect({ trace }, { depth: 0 });
|
||
assert.strictEqual(actualDepth0, "{ trace: [Tracing] }");
|
||
//! bun's tracing_events implementation is buggy/incomplete (?)
|
||
//const actualDepth1 = util.inspect({ trace }, { depth: 1 });
|
||
//assert.strictEqual(
|
||
// actualDepth1,
|
||
// "{ trace: Tracing { enabled: false, categories: 'fo' } }"
|
||
//);
|
||
} catch (err) {
|
||
if (err.code !== "ERR_TRACE_EVENTS_UNAVAILABLE") throw err;
|
||
}
|
||
}
|
||
|
||
// Inspect prototype properties.
|
||
{
|
||
function _defineProperty(obj, key, value) {
|
||
if (key in obj) {
|
||
Object.defineProperty(obj, key, {
|
||
value: value,
|
||
enumerable: true,
|
||
configurable: true,
|
||
writable: true,
|
||
});
|
||
} else {
|
||
obj[key] = value;
|
||
}
|
||
return obj;
|
||
}
|
||
|
||
class Foo extends Map {
|
||
constructor(...args) {
|
||
super(...args);
|
||
_defineProperty(this, "prop", false);
|
||
_defineProperty(this, "prop2", true);
|
||
}
|
||
get abc() {
|
||
return true;
|
||
}
|
||
get def() {
|
||
return false;
|
||
}
|
||
set def(v) {}
|
||
get xyz() {
|
||
return "Should be ignored";
|
||
}
|
||
func(a) {}
|
||
[util.inspect.custom]() {
|
||
return this;
|
||
}
|
||
}
|
||
|
||
class Bar extends Foo {
|
||
constructor(...args) {
|
||
super(...args);
|
||
_defineProperty(this, "prop", true);
|
||
_defineProperty(this, "abc", true);
|
||
}
|
||
|
||
get xyz() {
|
||
return "YES!";
|
||
}
|
||
[util.inspect.custom]() {
|
||
return this;
|
||
}
|
||
}
|
||
|
||
const bar = new Bar();
|
||
|
||
assert.strictEqual(inspect(bar), "Bar(0) [Map] { prop: true, prop2: true, abc: true }");
|
||
assert.strictEqual(
|
||
inspect(bar, { showHidden: true, getters: true, colors: false }),
|
||
"Bar(0) [Map] {\n" +
|
||
" prop: true,\n" +
|
||
" prop2: true,\n" +
|
||
" abc: true,\n" +
|
||
" [xyz]: [Getter: 'YES!'],\n" +
|
||
" [def]: [Getter/Setter: false]\n" +
|
||
"}",
|
||
);
|
||
assert.strictEqual(
|
||
inspect(bar, { showHidden: true, getters: false, colors: true }),
|
||
"Bar(0) [Map] {\n" +
|
||
" prop: \x1B[33mtrue\x1B[39m,\n" +
|
||
" prop2: \x1B[33mtrue\x1B[39m,\n" +
|
||
" abc: \x1B[33mtrue\x1B[39m,\n" +
|
||
" \x1B[2m[xyz]: \x1B[36m[Getter]\x1B[39m\x1B[22m,\n" +
|
||
" \x1B[2m[def]: \x1B[36m[Getter/Setter]\x1B[39m\x1B[22m\n" +
|
||
"}",
|
||
);
|
||
|
||
const obj = { __proto__: { abc: true, def: 5, toString() {} } };
|
||
assert.strictEqual(
|
||
inspect(obj, { showHidden: true, colors: true }),
|
||
"{ \x1B[2mabc: \x1B[33mtrue\x1B[39m\x1B[22m, " + "\x1B[2mdef: \x1B[33m5\x1B[39m\x1B[22m }",
|
||
);
|
||
|
||
assert.strictEqual(
|
||
inspect(Object.getPrototypeOf(bar), { showHidden: true, getters: true }),
|
||
"<ref *1> Foo [Map] {\n" +
|
||
" [constructor]: [class Bar extends Foo] {\n" +
|
||
` [prototype]: [Circular *1],\n [name]: 'Bar',\n` +
|
||
" [length]: 0,\n" +
|
||
" [Symbol(Symbol.species)]: [Getter: <Inspection threw " +
|
||
"(Symbol.prototype.toString requires that |this| be a symbol or a symbol object)>]\n" +
|
||
" },\n" +
|
||
" [xyz]: [Getter: 'YES!'],\n" +
|
||
" [Symbol(nodejs.util.inspect.custom)]: " +
|
||
"[Function: [nodejs.util.inspect.custom]] {\n" +
|
||
" [length]: 0,\n" +
|
||
" [name]: '[nodejs.util.inspect.custom]'\n" +
|
||
" },\n" +
|
||
" [abc]: [Getter: true],\n" +
|
||
" [def]: [Getter/Setter: false]\n" +
|
||
" }",
|
||
);
|
||
|
||
assert.strictEqual(inspect(Object.getPrototypeOf(bar)), "Foo [Map] {}");
|
||
|
||
assert.strictEqual(inspect(Object.getPrototypeOf(new Foo())), "Map {}");
|
||
}
|
||
|
||
// Check that prototypes with a null prototype are inspectable.
|
||
// Regression test for https://github.com/nodejs/node/issues/35730
|
||
{
|
||
function Func() {}
|
||
Func.prototype = null;
|
||
const object = {};
|
||
object.constructor = Func;
|
||
|
||
assert.strictEqual(util.inspect(object), "{ constructor: [Function: Func] }");
|
||
}
|
||
|
||
// Test changing util.inspect.colors colors and aliases.
|
||
{
|
||
const colors = util.inspect.colors;
|
||
|
||
const originalValue = colors.gray;
|
||
|
||
// "grey" is reference-equal alias of "gray".
|
||
assert.strictEqual(colors.grey, colors.gray);
|
||
|
||
// Assigninging one should assign the other. This tests that the alias setter
|
||
// function keeps things reference-equal.
|
||
colors.gray = [0, 0];
|
||
assert.deepStrictEqual(colors.gray, [0, 0]);
|
||
assert.strictEqual(colors.grey, colors.gray);
|
||
|
||
colors.grey = [1, 1];
|
||
assert.deepStrictEqual(colors.grey, [1, 1]);
|
||
assert.strictEqual(colors.grey, colors.gray);
|
||
|
||
// Restore original value to avoid side effects in other tests.
|
||
colors.gray = originalValue;
|
||
assert.deepStrictEqual(colors.gray, originalValue);
|
||
assert.strictEqual(colors.grey, colors.gray);
|
||
}
|
||
|
||
// https://github.com/nodejs/node/issues/31889
|
||
//{ //! how to get the undetectable object in JSC?
|
||
// const undetectable = vm.runInThisContext('%GetUndetectable()');
|
||
// assert.strictEqual(inspect(undetectable), '{}');
|
||
//}
|
||
|
||
// Truncate output for Primitives with 1 character left
|
||
{
|
||
assert.strictEqual(util.inspect("bl", { maxStringLength: 1 }), "'b'... 1 more character");
|
||
}
|
||
|
||
{
|
||
const x = "a".repeat(1e6);
|
||
assert(util.inspect(x).endsWith("... 990000 more characters"));
|
||
assert.strictEqual(util.inspect(x, { maxStringLength: 4 }), "'aaaa'... 999996 more characters");
|
||
assert.match(util.inspect(x, { maxStringLength: null }), /a'$/);
|
||
}
|
||
|
||
{
|
||
// Verify that util.inspect() invokes custom inspect functions on objects
|
||
// from other vm.Contexts but does not pass data from its own Context to that
|
||
// function.
|
||
const target = vm.runInNewContext(
|
||
/*js*/ `
|
||
({
|
||
[Symbol.for('nodejs.util.inspect.custom')](depth, ctx) {
|
||
this.depth = depth;
|
||
this.ctx = ctx;
|
||
try {
|
||
this.stylized = ctx.stylize('🐈');
|
||
} catch (e) {
|
||
this.stylizeException = e;
|
||
}
|
||
return this.stylized;
|
||
}
|
||
})
|
||
`,
|
||
{ __proto__: null },
|
||
);
|
||
assert.strictEqual(target.ctx, undefined);
|
||
|
||
{
|
||
// Subtest 1: Just try to inspect the object with default options.
|
||
assert.strictEqual(util.inspect(target), "🐈");
|
||
assert.strictEqual(typeof target.ctx, "object");
|
||
const objectGraph = fullObjectGraph(target);
|
||
assert(!objectGraph.has(Object));
|
||
assert(!objectGraph.has(Function));
|
||
}
|
||
|
||
if (false) {
|
||
//! SKIP TEST: non-standard api
|
||
// Subtest 2: Use a stylize function that returns a non-primitive.
|
||
const output = util.inspect(target, {
|
||
stylize: mustCall(str => {
|
||
return {};
|
||
}),
|
||
});
|
||
assert.strictEqual(output, "[object Object]");
|
||
assert.strictEqual(typeof target.ctx, "object");
|
||
const objectGraph = fullObjectGraph(target);
|
||
assert(!objectGraph.has(Object));
|
||
assert(!objectGraph.has(Function));
|
||
}
|
||
|
||
if (false) {
|
||
//! SKIP TEST: non-standard api
|
||
// Subtest 3: Use a stylize function that throws an exception.
|
||
const output = util.inspect(target, {
|
||
stylize: mustCall(str => {
|
||
throw new Error("oops");
|
||
}),
|
||
});
|
||
assert.strictEqual(output, "🐈");
|
||
assert.strictEqual(typeof target.ctx, "object");
|
||
const objectGraph = fullObjectGraph(target);
|
||
assert(!objectGraph.has(Object));
|
||
assert(!objectGraph.has(Function));
|
||
}
|
||
|
||
function fullObjectGraph(value) {
|
||
const graph = new Set([value]);
|
||
|
||
for (const entry of graph) {
|
||
if ((typeof entry !== "object" && typeof entry !== "function") || entry === null) {
|
||
continue;
|
||
}
|
||
|
||
graph.add(Object.getPrototypeOf(entry));
|
||
const descriptors = Object.values(Object.getOwnPropertyDescriptors(entry));
|
||
for (const descriptor of descriptors) {
|
||
graph.add(descriptor.value);
|
||
graph.add(descriptor.set);
|
||
graph.add(descriptor.get);
|
||
}
|
||
}
|
||
|
||
return graph;
|
||
}
|
||
|
||
// Consistency check.
|
||
assert(fullObjectGraph(global).has(Function.prototype));
|
||
}
|
||
|
||
{
|
||
// Confirm that own constructor value displays correctly.
|
||
|
||
function Fhqwhgads() {}
|
||
|
||
const sterrance = new Fhqwhgads();
|
||
sterrance.constructor = Fhqwhgads;
|
||
|
||
assert.strictEqual(
|
||
util.inspect(sterrance, { showHidden: true }),
|
||
"Fhqwhgads {\n" +
|
||
" constructor: <ref *1> [Function: Fhqwhgads] {\n" +
|
||
" [length]: 0,\n" +
|
||
" [prototype]: { [constructor]: [Circular *1] },\n" +
|
||
" [name]: 'Fhqwhgads'\n" +
|
||
" }\n" +
|
||
"}",
|
||
);
|
||
}
|
||
|
||
{
|
||
// Confirm null prototype of generator prototype displays as expected.
|
||
|
||
function getProtoOfProto() {
|
||
return Object.getPrototypeOf(Object.getPrototypeOf(function* () {}));
|
||
}
|
||
|
||
function* generator() {}
|
||
|
||
const generatorPrototype = Object.getPrototypeOf(generator);
|
||
const originalProtoOfProto = Object.getPrototypeOf(generatorPrototype);
|
||
assert.strictEqual(getProtoOfProto(), originalProtoOfProto);
|
||
Object.setPrototypeOf(generatorPrototype, null);
|
||
assert.notStrictEqual(getProtoOfProto, originalProtoOfProto);
|
||
|
||
// This is the actual test. The other assertions in this block are about
|
||
// making sure the test is set up correctly and isn't polluting other tests.
|
||
assert.strictEqual(
|
||
util.inspect(generator, { showHidden: true }),
|
||
"[GeneratorFunction: generator] {\n" +
|
||
" [length]: 0,\n" +
|
||
" [name]: 'generator',\n" +
|
||
" [prototype]: Object [Generator] { [Symbol(Symbol.toStringTag)]: 'Generator' },\n" +
|
||
" [Symbol(Symbol.toStringTag)]: 'GeneratorFunction'\n" +
|
||
"}",
|
||
);
|
||
|
||
// Reset so we don't pollute other tests
|
||
Object.setPrototypeOf(generatorPrototype, originalProtoOfProto);
|
||
assert.strictEqual(getProtoOfProto(), originalProtoOfProto);
|
||
}
|
||
|
||
{
|
||
// Test for when breakLength results in a single column.
|
||
const obj = Array(9).fill("fhqwhgadshgnsdhjsdbkhsdabkfabkveybvf");
|
||
assert.strictEqual(
|
||
util.inspect(obj, { breakLength: 256 }),
|
||
"[\n" +
|
||
" 'fhqwhgadshgnsdhjsdbkhsdabkfabkveybvf',\n" +
|
||
" 'fhqwhgadshgnsdhjsdbkhsdabkfabkveybvf',\n" +
|
||
" 'fhqwhgadshgnsdhjsdbkhsdabkfabkveybvf',\n" +
|
||
" 'fhqwhgadshgnsdhjsdbkhsdabkfabkveybvf',\n" +
|
||
" 'fhqwhgadshgnsdhjsdbkhsdabkfabkveybvf',\n" +
|
||
" 'fhqwhgadshgnsdhjsdbkhsdabkfabkveybvf',\n" +
|
||
" 'fhqwhgadshgnsdhjsdbkhsdabkfabkveybvf',\n" +
|
||
" 'fhqwhgadshgnsdhjsdbkhsdabkfabkveybvf',\n" +
|
||
" 'fhqwhgadshgnsdhjsdbkhsdabkfabkveybvf'\n" +
|
||
"]",
|
||
);
|
||
}
|
||
|
||
{
|
||
assert.strictEqual(util.inspect({ ["__proto__"]: { a: 1 } }), "{ ['__proto__']: { a: 1 } }");
|
||
}
|
||
|
||
{
|
||
const { numericSeparator } = util.inspect.defaultOptions;
|
||
util.inspect.defaultOptions.numericSeparator = true;
|
||
|
||
assert.strictEqual(util.inspect(1234567891234567891234), "1.234567891234568e+21");
|
||
assert.strictEqual(util.inspect(123456789.12345678), "123_456_789.123_456_78");
|
||
|
||
assert.strictEqual(util.inspect(10_000_000), "10_000_000");
|
||
assert.strictEqual(util.inspect(1_000_000), "1_000_000");
|
||
assert.strictEqual(util.inspect(100_000), "100_000");
|
||
assert.strictEqual(util.inspect(99_999.9), "99_999.9");
|
||
assert.strictEqual(util.inspect(9_999), "9_999");
|
||
assert.strictEqual(util.inspect(999), "999");
|
||
assert.strictEqual(util.inspect(NaN), "NaN");
|
||
assert.strictEqual(util.inspect(Infinity), "Infinity");
|
||
assert.strictEqual(util.inspect(-Infinity), "-Infinity");
|
||
|
||
assert.strictEqual(util.inspect(new Float64Array([100_000_000])), "Float64Array(1) [ 100_000_000 ]");
|
||
assert.strictEqual(util.inspect(new BigInt64Array([9_100_000_100n])), "BigInt64Array(1) [ 9_100_000_100n ]");
|
||
|
||
assert.strictEqual(util.inspect(123456789), "123_456_789");
|
||
assert.strictEqual(util.inspect(123456789n), "123_456_789n");
|
||
|
||
util.inspect.defaultOptions.numericSeparator = numericSeparator;
|
||
|
||
assert.strictEqual(util.inspect(123456789.12345678, { numericSeparator: true }), "123_456_789.123_456_78");
|
||
|
||
assert.strictEqual(util.inspect(-123456789.12345678, { numericSeparator: true }), "-123_456_789.123_456_78");
|
||
}
|
||
|
||
// Regression test for https://github.com/nodejs/node/issues/41244
|
||
{
|
||
assert.strictEqual(
|
||
util.inspect({
|
||
get [Symbol.iterator]() {
|
||
throw new Error();
|
||
},
|
||
}),
|
||
"{ [Symbol(Symbol.iterator)]: [Getter] }",
|
||
);
|
||
}
|
||
});
|
||
|
||
// Utility functions
|
||
function runCallChecks(exitCode) {
|
||
if (exitCode !== 0) return;
|
||
|
||
const failed = mustCallChecks.filter(function (context) {
|
||
if ("minimum" in context) {
|
||
context.messageSegment = `at least ${context.minimum}`;
|
||
return context.actual < context.minimum;
|
||
}
|
||
context.messageSegment = `exactly ${context.exact}`;
|
||
return context.actual !== context.exact;
|
||
});
|
||
|
||
failed.forEach(function (context) {
|
||
console.log(
|
||
"Mismatched %s function calls. Expected %s, actual %d.",
|
||
context.name,
|
||
context.messageSegment,
|
||
context.actual,
|
||
);
|
||
console.log(context.stack.split("\n").slice(2).join("\n"));
|
||
});
|
||
|
||
if (failed.length) process.exit(1);
|
||
}
|
||
|
||
function mustCall(fn, criteria = 1) {
|
||
if (process._exiting) throw new Error("Cannot use mustCall() in process exit handler");
|
||
if (typeof fn === "number") {
|
||
criteria = fn;
|
||
fn = noop;
|
||
} else if (fn === undefined) fn = noop;
|
||
|
||
const field = "exact";
|
||
if (typeof criteria !== "number") throw new TypeError(`Invalid ${field} value: ${criteria}`);
|
||
|
||
const context = {
|
||
[field]: criteria,
|
||
actual: 0,
|
||
stack: util.inspect(new Error()),
|
||
name: fn.name || "<anonymous>",
|
||
};
|
||
|
||
// Add the exit listener only once to avoid listener leak warnings
|
||
if (mustCallChecks.length === 0) process.on("exit", runCallChecks);
|
||
mustCallChecks.push(context);
|
||
|
||
const _return = function () {
|
||
context.actual++;
|
||
return fn.apply(this, arguments);
|
||
};
|
||
// Function instances have own properties that may be relevant.
|
||
// Let's replicate those properties to the returned function.
|
||
// Refs: https://tc39.es/ecma262/#sec-function-instances
|
||
Object.defineProperties(_return, {
|
||
name: {
|
||
value: fn.name,
|
||
writable: false,
|
||
enumerable: false,
|
||
configurable: true,
|
||
},
|
||
length: {
|
||
value: fn.length,
|
||
writable: false,
|
||
enumerable: false,
|
||
configurable: true,
|
||
},
|
||
});
|
||
return _return;
|
||
}
|