mirror of
https://github.com/oven-sh/bun
synced 2026-02-11 11:29:02 +00:00
[bun.js] Implement import.meta.require
This allows synchronous dynamic loading of `.node`, `.json`, and `.toml` files. It is not a CommonJS require, but it can be used that way so long as the content is not JavaScript.
This commit is contained in:
Jarred Sumner
@@ -1048,83 +1048,132 @@ pub const VirtualMachine = struct {
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.source_url = ZigString.init(Runtime.Runtime.Imports.Name),
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.hash = Runtime.Runtime.versionHash(),
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};
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// This is all complicated because the imports have to be linked and we want to run the printer on it
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// so it consistently handles bundled imports
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// we can't take the shortcut of just directly importing the file, sadly.
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} else if (strings.eqlComptime(_specifier, main_file_name)) {
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if (comptime disable_transpilying) {
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return ResolvedSource{
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.allocator = null,
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.source_code = ZigString.init(jsc_vm.entry_point.source.contents),
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.specifier = ZigString.init(std.mem.span(main_file_name)),
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.source_url = ZigString.init(std.mem.span(main_file_name)),
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.hash = 0,
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};
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}
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defer jsc_vm.transpiled_count += 1;
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} else if (HardcodedModule.Map.get(_specifier)) |hardcoded| {
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switch (hardcoded) {
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// This is all complicated because the imports have to be linked and we want to run the printer on it
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// so it consistently handles bundled imports
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// we can't take the shortcut of just directly importing the file, sadly.
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.@"bun:main" => {
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if (comptime disable_transpilying) {
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return ResolvedSource{
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.allocator = null,
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.source_code = ZigString.init(jsc_vm.entry_point.source.contents),
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.specifier = ZigString.init(std.mem.span(main_file_name)),
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.source_url = ZigString.init(std.mem.span(main_file_name)),
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.hash = 0,
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};
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}
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defer jsc_vm.transpiled_count += 1;
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var bundler = &jsc_vm.bundler;
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var old = jsc_vm.bundler.log;
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jsc_vm.bundler.log = log;
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jsc_vm.bundler.linker.log = log;
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jsc_vm.bundler.resolver.log = log;
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defer {
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jsc_vm.bundler.log = old;
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jsc_vm.bundler.linker.log = old;
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jsc_vm.bundler.resolver.log = old;
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}
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var bundler = &jsc_vm.bundler;
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var old = jsc_vm.bundler.log;
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jsc_vm.bundler.log = log;
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jsc_vm.bundler.linker.log = log;
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jsc_vm.bundler.resolver.log = log;
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defer {
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jsc_vm.bundler.log = old;
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jsc_vm.bundler.linker.log = old;
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jsc_vm.bundler.resolver.log = old;
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}
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var jsx = bundler.options.jsx;
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jsx.parse = false;
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var opts = js_parser.Parser.Options.init(jsx, .js);
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opts.enable_bundling = false;
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opts.transform_require_to_import = true;
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opts.can_import_from_bundle = bundler.options.node_modules_bundle != null;
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opts.features.hot_module_reloading = false;
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opts.features.react_fast_refresh = false;
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opts.filepath_hash_for_hmr = 0;
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opts.warn_about_unbundled_modules = false;
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opts.macro_context = &jsc_vm.bundler.macro_context.?;
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const main_ast = (bundler.resolver.caches.js.parse(jsc_vm.allocator, opts, bundler.options.define, bundler.log, &jsc_vm.entry_point.source) catch null) orelse {
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return error.ParseError;
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};
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var parse_result = ParseResult{ .source = jsc_vm.entry_point.source, .ast = main_ast, .loader = .js, .input_fd = null };
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var file_path = Fs.Path.init(bundler.fs.top_level_dir);
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file_path.name.dir = bundler.fs.top_level_dir;
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file_path.name.base = "bun:main";
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try bundler.linker.link(
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file_path,
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&parse_result,
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jsc_vm.origin,
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.absolute_path,
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false,
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true,
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);
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var printer = source_code_printer.?.*;
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var written: usize = undefined;
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printer.ctx.reset();
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{
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defer source_code_printer.?.* = printer;
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written = try jsc_vm.bundler.printWithSourceMap(
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parse_result,
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@TypeOf(&printer),
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&printer,
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.esm_ascii,
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SavedSourceMap.SourceMapHandler.init(&jsc_vm.source_mappings),
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);
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}
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var jsx = bundler.options.jsx;
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jsx.parse = false;
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var opts = js_parser.Parser.Options.init(jsx, .js);
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opts.enable_bundling = false;
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opts.transform_require_to_import = true;
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opts.can_import_from_bundle = bundler.options.node_modules_bundle != null;
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opts.features.hot_module_reloading = false;
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opts.features.react_fast_refresh = false;
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opts.filepath_hash_for_hmr = 0;
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opts.warn_about_unbundled_modules = false;
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opts.macro_context = &jsc_vm.bundler.macro_context.?;
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const main_ast = (bundler.resolver.caches.js.parse(jsc_vm.allocator, opts, bundler.options.define, bundler.log, &jsc_vm.entry_point.source) catch null) orelse {
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return error.ParseError;
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};
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var parse_result = ParseResult{ .source = jsc_vm.entry_point.source, .ast = main_ast, .loader = .js, .input_fd = null };
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var file_path = Fs.Path.init(bundler.fs.top_level_dir);
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file_path.name.dir = bundler.fs.top_level_dir;
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file_path.name.base = "bun:main";
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try bundler.linker.link(
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file_path,
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&parse_result,
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jsc_vm.origin,
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.absolute_path,
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false,
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true,
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);
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var printer = source_code_printer.?.*;
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var written: usize = undefined;
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printer.ctx.reset();
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{
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defer source_code_printer.?.* = printer;
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written = try jsc_vm.bundler.printWithSourceMap(
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parse_result,
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@TypeOf(&printer),
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&printer,
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.esm_ascii,
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SavedSourceMap.SourceMapHandler.init(&jsc_vm.source_mappings),
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);
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}
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if (written == 0) {
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return error.PrintingErrorWriteFailed;
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}
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if (written == 0) {
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return error.PrintingErrorWriteFailed;
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}
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return ResolvedSource{
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.allocator = null,
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.source_code = ZigString.init(jsc_vm.allocator.dupe(u8, printer.ctx.written) catch unreachable),
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.specifier = ZigString.init(std.mem.span(main_file_name)),
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.source_url = ZigString.init(std.mem.span(main_file_name)),
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.hash = 0,
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};
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return ResolvedSource{
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.allocator = null,
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.source_code = ZigString.init(jsc_vm.allocator.dupe(u8, printer.ctx.written) catch unreachable),
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.specifier = ZigString.init(std.mem.span(main_file_name)),
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.source_url = ZigString.init(std.mem.span(main_file_name)),
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.hash = 0,
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};
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},
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.@"node:fs" => {
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return ResolvedSource{
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.allocator = null,
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.source_code = ZigString.init(@embedFile("fs.exports.js") ++ JSC.Node.fs.constants_string),
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.specifier = ZigString.init("node:fs"),
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.source_url = ZigString.init("node:fs"),
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.hash = 0,
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};
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},
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.@"node:path" => {
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return ResolvedSource{
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.allocator = null,
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.source_code = ZigString.init(Node.Path.code),
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.specifier = ZigString.init("node:path"),
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.source_url = ZigString.init("node:path"),
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.hash = 0,
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};
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},
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.@"bun:ffi" => {
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return ResolvedSource{
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.allocator = null,
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.source_code = ZigString.init(
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"export const FFIType = " ++
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JSC.FFI.ABIType.map_to_js_object ++
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";\n\n" ++
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"export const suffix = '" ++ shared_library_suffix ++ "';\n\n" ++
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@embedFile("ffi.exports.js") ++
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"\n",
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),
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.specifier = ZigString.init("bun:ffi"),
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.source_url = ZigString.init("bun:ffi"),
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.hash = 0,
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};
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},
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.@"detect-libc" => {
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return ResolvedSource{
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.allocator = null,
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.source_code = ZigString.init(
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@as(string, @embedFile(if (Environment.isLinux) "detect-libc.linux.js" else "detect-libc.js")),
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),
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.specifier = ZigString.init("detect-libc"),
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.source_url = ZigString.init("detect-libc"),
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.hash = 0,
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};
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},
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}
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} else if (_specifier.len > js_ast.Macro.namespaceWithColon.len and
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strings.eqlComptimeIgnoreLen(_specifier[0..js_ast.Macro.namespaceWithColon.len], js_ast.Macro.namespaceWithColon))
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{
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@@ -1139,37 +1188,6 @@ pub const VirtualMachine = struct {
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};
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}
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}
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} else if (strings.eqlComptime(_specifier, "node:fs")) {
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return ResolvedSource{
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.allocator = null,
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.source_code = ZigString.init(@embedFile("fs.exports.js") ++ JSC.Node.fs.constants_string),
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.specifier = ZigString.init("node:fs"),
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.source_url = ZigString.init("node:fs"),
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.hash = 0,
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};
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} else if (strings.eqlComptime(_specifier, "node:path")) {
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return ResolvedSource{
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.allocator = null,
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.source_code = ZigString.init(Node.Path.code),
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.specifier = ZigString.init("node:path"),
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.source_url = ZigString.init("node:path"),
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.hash = 0,
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};
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} else if (strings.eqlComptime(_specifier, "bun:ffi")) {
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return ResolvedSource{
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.allocator = null,
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.source_code = ZigString.init(
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"export const FFIType = " ++
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JSC.FFI.ABIType.map_to_js_object ++
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";\n\n" ++
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"export const suffix = '" ++ shared_library_suffix ++ "';\n\n" ++
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@embedFile("ffi.exports.js") ++
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"\n",
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),
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.specifier = ZigString.init("bun:ffi"),
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.source_url = ZigString.init("bun:ffi"),
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.hash = 0,
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};
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}
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const specifier = normalizeSpecifier(_specifier);
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@@ -1393,17 +1411,9 @@ pub const VirtualMachine = struct {
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ret.result = null;
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ret.path = specifier;
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return;
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} else if (strings.eqlComptime(specifier, "node:fs")) {
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} else if (HardcodedModule.Map.get(specifier)) |result| {
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ret.result = null;
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ret.path = "node:fs";
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return;
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} else if (strings.eqlComptime(specifier, "node:path")) {
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ret.result = null;
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ret.path = "node:path";
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return;
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} else if (strings.eqlComptime(specifier, "bun:ffi")) {
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ret.result = null;
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ret.path = "bun:ffi";
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ret.path = std.mem.span(@tagName(result));
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return;
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}
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@@ -2874,3 +2884,41 @@ pub const BuildError = struct {
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};
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pub const JSPrivateDataTag = JSPrivateDataPtr.Tag;
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pub const HardcodedModule = enum {
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@"bun:ffi",
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@"bun:main",
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@"node:fs",
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@"node:path",
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@"detect-libc",
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pub const Map = bun.ComptimeStringMap(
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HardcodedModule,
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.{
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.{ "bun:ffi", HardcodedModule.@"bun:ffi" },
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.{ "ffi", HardcodedModule.@"bun:ffi" },
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.{ "bun:main", HardcodedModule.@"bun:main" },
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.{ "node:fs", HardcodedModule.@"node:fs" },
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.{ "fs", HardcodedModule.@"node:fs" },
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.{ "node:path", HardcodedModule.@"node:path" },
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.{ "path", HardcodedModule.@"node:path" },
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.{ "node:path/win32", HardcodedModule.@"node:path" },
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.{ "node:path/posix", HardcodedModule.@"node:path" },
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.{ "detect-libc", HardcodedModule.@"detect-libc" },
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},
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);
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pub const LinkerMap = bun.ComptimeStringMap(
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string,
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.{
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.{ "bun:ffi", "bun:ffi" },
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.{ "detect-libc", "detect-libc" },
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.{ "detect-libc/lib/detect-libc.js", "detect-libc" },
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.{ "ffi", "bun:ffi" },
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.{ "fs", "node:fs" },
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.{ "node:fs", "node:fs" },
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.{ "node:path", "node:path" },
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.{ "path", "node:path" },
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.{ "bun:wrap", "bun:wrap" },
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},
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);
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};
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