mirror of
https://github.com/oven-sh/bun
synced 2026-02-09 10:28:47 +00:00
edf13bd91d
(For internal tracking: fixes STAB-1129, STAB-1145, STAB-1146, STAB-1150, STAB-1126, STAB-1147, STAB-1148, STAB-1149, STAB-1158) --------- Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com> Co-authored-by: Jarred Sumner <jarred@jarredsumner.com> Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>
444 lines
17 KiB
Zig
444 lines
17 KiB
Zig
// This file is the old linker, used by Bun.Transpiler.
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pub const CSSResolveError = error{ResolveMessage};
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pub const OnImportCallback = *const fn (resolve_result: *const Resolver.Result, import_record: *ImportRecord, origin: URL) void;
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pub const Linker = struct {
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const HashedFileNameMap = std.AutoHashMap(u64, string);
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const ThisLinker = @This();
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allocator: std.mem.Allocator,
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options: *Options.BundleOptions,
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fs: *Fs.FileSystem,
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log: *logger.Log,
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resolve_queue: *ResolveQueue,
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resolver: *ResolverType,
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resolve_results: *_transpiler.ResolveResults,
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any_needs_runtime: bool = false,
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runtime_import_record: ?ImportRecord = null,
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hashed_filenames: HashedFileNameMap,
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import_counter: usize = 0,
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tagged_resolutions: TaggedResolution = TaggedResolution{},
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plugin_runner: ?*PluginRunner = null,
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pub const runtime_source_path = "bun:wrap";
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pub const TaggedResolution = struct {
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react_refresh: ?Resolver.Result = null,
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// These tags cannot safely be used
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// Projects may use different JSX runtimes across folders
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// jsx_import: ?Resolver.Result = null,
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// jsx_classic: ?Resolver.Result = null,
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};
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pub fn init(
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allocator: std.mem.Allocator,
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log: *logger.Log,
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resolve_queue: *ResolveQueue,
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options: *Options.BundleOptions,
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resolver: *ResolverType,
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resolve_results: *_transpiler.ResolveResults,
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fs: *Fs.FileSystem,
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) ThisLinker {
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relative_paths_list = ImportPathsList.init(allocator);
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return ThisLinker{
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.allocator = allocator,
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.options = options,
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.fs = fs,
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.log = log,
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.resolve_queue = resolve_queue,
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.resolver = resolver,
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.resolve_results = resolve_results,
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.hashed_filenames = HashedFileNameMap.init(allocator),
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};
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}
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pub fn getModKey(
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this: *ThisLinker,
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file_path: Fs.Path,
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fd: ?FileDescriptorType,
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) !Fs.FileSystem.RealFS.ModKey {
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var file: std.fs.File = if (fd) |_fd| _fd.stdFile() else try std.fs.openFileAbsolute(file_path.text, .{ .mode = .read_only });
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Fs.FileSystem.setMaxFd(file.handle);
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const modkey = try Fs.FileSystem.RealFS.ModKey.generate(&this.fs.fs, file_path.text, file);
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if (fd == null)
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file.close();
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return modkey;
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}
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pub fn getHashedFilename(
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this: *ThisLinker,
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file_path: Fs.Path,
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fd: ?FileDescriptorType,
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) !string {
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if (Transpiler.isCacheEnabled) {
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const hashed = bun.hash(file_path.text);
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const hashed_result = try this.hashed_filenames.getOrPut(hashed);
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if (hashed_result.found_existing) {
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return hashed_result.value_ptr.*;
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}
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}
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const modkey = try this.getModKey(file_path, fd);
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const hash_name = modkey.hashName(file_path.text);
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if (Transpiler.isCacheEnabled) {
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const hashed = bun.hash(file_path.text);
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try this.hashed_filenames.put(hashed, try this.allocator.dupe(u8, hash_name));
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}
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return hash_name;
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}
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// This modifies the Ast in-place!
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// But more importantly, this does the following:
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// - Wrap CommonJS files
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pub fn link(
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linker: *ThisLinker,
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file_path: Fs.Path,
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result: *_transpiler.ParseResult,
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origin: URL,
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comptime import_path_format: Options.BundleOptions.ImportPathFormat,
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comptime ignore_runtime: bool,
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comptime is_bun: bool,
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) !void {
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const source_dir = file_path.sourceDir();
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var externals = std.ArrayList(u32).init(linker.allocator);
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var had_resolve_errors = false;
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const is_deferred = result.pending_imports.len > 0;
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// Step 1. Resolve imports & requires
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switch (result.loader) {
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.jsx, .js, .ts, .tsx => {
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for (result.ast.import_records.slice(), 0..) |*import_record, record_i| {
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if (import_record.is_unused or
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(is_bun and is_deferred and !result.isPendingImport(@intCast(record_i)))) continue;
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const record_index = record_i;
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if (comptime !ignore_runtime) {
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if (strings.eqlComptime(import_record.path.namespace, "runtime")) {
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if (import_path_format == .absolute_url) {
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import_record.path = Fs.Path.initWithNamespace(try origin.joinAlloc(linker.allocator, "", "", "bun:wrap", "", ""), "bun");
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} else {
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import_record.path = try linker.generateImportPath(
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source_dir,
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Linker.runtime_source_path,
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false,
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"bun",
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origin,
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import_path_format,
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);
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}
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result.ast.runtime_import_record_id = @intCast(record_index);
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result.ast.needs_runtime = true;
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continue;
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}
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}
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if (comptime is_bun) {
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if (jsc.ModuleLoader.HardcodedModule.Alias.get(import_record.path.text, linker.options.target)) |replacement| {
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if (replacement.tag == .builtin and import_record.kind.isCommonJS())
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continue;
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import_record.path.text = replacement.path;
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import_record.tag = replacement.tag;
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import_record.is_external_without_side_effects = true;
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continue;
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}
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if (strings.startsWith(import_record.path.text, "node:")) {
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// if a module is not found here, it is not found at all
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// so we can just disable it
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had_resolve_errors = try whenModuleNotFound(linker, import_record, result, is_bun);
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if (had_resolve_errors) return error.ResolveMessage;
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continue;
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}
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// TODO: this is technical debt
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if (linker.options.rewrite_jest_for_tests) {
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if (strings.eqlComptime(
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import_record.path.text,
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"@jest/globals",
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) or strings.eqlComptime(
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import_record.path.text,
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"vitest",
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)) {
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import_record.path.namespace = "bun";
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import_record.tag = .bun_test;
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import_record.path.text = "test";
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continue;
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}
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}
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if (strings.hasPrefixComptime(import_record.path.text, "bun:")) {
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import_record.path = Fs.Path.init(import_record.path.text["bun:".len..]);
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import_record.path.namespace = "bun";
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if (strings.eqlComptime(import_record.path.text, "test")) {
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import_record.tag = .bun_test;
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}
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// don't link bun
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continue;
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}
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// Resolve dynamic imports lazily for perf
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if (import_record.kind == .dynamic) {
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continue;
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}
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}
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if (linker.plugin_runner) |runner| {
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if (PluginRunner.couldBePlugin(import_record.path.text)) {
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if (try runner.onResolve(
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import_record.path.text,
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file_path.text,
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linker.log,
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import_record.range.loc,
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if (is_bun)
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jsc.JSGlobalObject.BunPluginTarget.bun
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else if (linker.options.target == .browser)
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jsc.JSGlobalObject.BunPluginTarget.browser
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else
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jsc.JSGlobalObject.BunPluginTarget.node,
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)) |path| {
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import_record.path = try linker.generateImportPath(
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source_dir,
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path.text,
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false,
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path.namespace,
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origin,
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import_path_format,
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);
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import_record.print_namespace_in_path = true;
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continue;
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}
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}
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}
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}
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},
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else => {},
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}
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if (had_resolve_errors) return error.ResolveMessage;
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externals.clearAndFree();
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}
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fn whenModuleNotFound(
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linker: *ThisLinker,
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import_record: *ImportRecord,
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result: *_transpiler.ParseResult,
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comptime is_bun: bool,
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) !bool {
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if (import_record.handles_import_errors) {
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import_record.path.is_disabled = true;
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return false;
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}
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if (comptime is_bun) {
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// make these happen at runtime
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if (import_record.kind == .require or import_record.kind == .require_resolve) {
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return false;
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}
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}
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if (import_record.path.text.len > 0 and Resolver.isPackagePath(import_record.path.text)) {
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if (linker.options.target == .browser and Options.ExternalModules.isNodeBuiltin(import_record.path.text)) {
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try linker.log.addResolveError(
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&result.source,
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import_record.range,
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linker.allocator,
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"Could not resolve: \"{s}\". Try setting --target=\"node\"",
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.{import_record.path.text},
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import_record.kind,
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error.ModuleNotFound,
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);
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} else {
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try linker.log.addResolveError(
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&result.source,
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import_record.range,
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linker.allocator,
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"Could not resolve: \"{s}\". Maybe you need to \"bun install\"?",
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.{import_record.path.text},
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import_record.kind,
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error.ModuleNotFound,
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);
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}
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} else {
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try linker.log.addResolveError(
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&result.source,
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import_record.range,
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linker.allocator,
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"Could not resolve: \"{s}\"",
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.{
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import_record.path.text,
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},
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import_record.kind,
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error.ModuleNotFound,
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);
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}
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return true;
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}
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const ImportPathsList = allocators.BSSStringList(512, 128);
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pub var relative_paths_list: *ImportPathsList = undefined;
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pub fn generateImportPath(
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linker: *ThisLinker,
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source_dir: string,
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source_path: string,
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use_hashed_name: bool,
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namespace: string,
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origin: URL,
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comptime import_path_format: Options.BundleOptions.ImportPathFormat,
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) !Fs.Path {
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switch (import_path_format) {
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.absolute_path => {
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if (strings.eqlComptime(namespace, "node")) {
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return Fs.Path.initWithNamespace(source_path, "node");
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}
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if (strings.eqlComptime(namespace, "bun") or strings.eqlComptime(namespace, "file") or namespace.len == 0) {
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const relative_name = linker.fs.relative(source_dir, source_path);
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return Fs.Path.initWithPretty(source_path, relative_name);
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} else {
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return Fs.Path.initWithNamespace(source_path, namespace);
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}
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},
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.relative => {
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var relative_name = linker.fs.relative(source_dir, source_path);
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var pretty: string = undefined;
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if (use_hashed_name) {
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var basepath = Fs.Path.init(source_path);
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const basename = try linker.getHashedFilename(basepath, null);
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const dir = basepath.name.dirWithTrailingSlash();
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var _pretty = try linker.allocator.alloc(u8, dir.len + basename.len + basepath.name.ext.len);
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bun.copy(u8, _pretty, dir);
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var remaining_pretty = _pretty[dir.len..];
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bun.copy(u8, remaining_pretty, basename);
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remaining_pretty = remaining_pretty[basename.len..];
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bun.copy(u8, remaining_pretty, basepath.name.ext);
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pretty = _pretty;
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relative_name = try linker.allocator.dupe(u8, relative_name);
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} else {
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if (relative_name.len > 1 and !(relative_name[0] == std.fs.path.sep or relative_name[0] == '.')) {
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pretty = try strings.concat(linker.allocator, &.{ "./", relative_name });
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} else {
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pretty = try linker.allocator.dupe(u8, relative_name);
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}
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relative_name = pretty;
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}
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return Fs.Path.initWithPretty(pretty, relative_name);
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},
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.absolute_url => {
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if (strings.eqlComptime(namespace, "node")) {
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if (comptime Environment.isDebug) bun.assert(strings.eqlComptime(source_path[0..5], "node:"));
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return Fs.Path.init(try std.fmt.allocPrint(
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linker.allocator,
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// assumption: already starts with "node:"
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"{s}/{s}",
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.{
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strings.withoutTrailingSlash(origin.href),
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strings.withoutLeadingSlash(source_path),
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},
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));
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} else {
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var absolute_pathname = Fs.PathName.init(source_path);
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if (!linker.options.preserve_extensions) {
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if (linker.options.out_extensions.get(absolute_pathname.ext)) |ext| {
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absolute_pathname.ext = ext;
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}
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}
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var base = linker.fs.relativeTo(source_path);
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if (strings.lastIndexOfChar(base, '.')) |dot| {
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base = base[0..dot];
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}
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const dirname = std.fs.path.dirname(base) orelse "";
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var basename = std.fs.path.basename(base);
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if (use_hashed_name) {
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const basepath = Fs.Path.init(source_path);
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basename = try linker.getHashedFilename(basepath, null);
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}
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return Fs.Path.init(try origin.joinAlloc(
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linker.allocator,
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"",
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dirname,
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basename,
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absolute_pathname.ext,
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source_path,
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));
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}
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},
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else => unreachable,
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}
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}
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pub fn resolveResultHashKey(linker: *ThisLinker, resolve_result: *const Resolver.Result) u64 {
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const path = resolve_result.pathConst() orelse unreachable;
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var hash_key = path.text;
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// Shorter hash key is faster to hash
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if (strings.startsWith(path.text, linker.fs.top_level_dir)) {
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hash_key = path.text[linker.fs.top_level_dir.len..];
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}
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return bun.hash(hash_key);
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}
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pub fn enqueueResolveResult(linker: *ThisLinker, resolve_result: *const Resolver.Result) !bool {
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const hash_key = linker.resolveResultHashKey(resolve_result);
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const get_or_put_entry = try linker.resolve_results.getOrPut(hash_key);
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if (!get_or_put_entry.found_existing) {
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try linker.resolve_queue.writeItem(resolve_result.*);
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}
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return !get_or_put_entry.found_existing;
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}
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};
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const string = []const u8;
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const Fs = @import("./fs.zig");
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const Options = @import("./options.zig");
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const std = @import("std");
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const URL = @import("./url.zig").URL;
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const _import_record = @import("./import_record.zig");
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const ImportRecord = _import_record.ImportRecord;
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const Resolver = @import("./resolver/resolver.zig");
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const ResolverType = Resolver.Resolver;
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const bun = @import("bun");
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const Environment = bun.Environment;
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const FileDescriptorType = bun.FileDescriptor;
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const allocators = bun.allocators;
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const jsc = bun.jsc;
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const logger = bun.logger;
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const strings = bun.strings;
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const _transpiler = bun.transpiler;
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const PluginRunner = bun.transpiler.PluginRunner;
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const ResolveQueue = _transpiler.ResolveQueue;
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const Transpiler = _transpiler.Transpiler;
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