mirror of
https://github.com/denoland/deno.git
synced 2024-11-02 09:34:19 -04:00
1352 lines
40 KiB
JavaScript
1352 lines
40 KiB
JavaScript
// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
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// This module is the entry point for "compiler" isolate, ie. the one
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// that is created when Deno needs to compile TS/WASM to JS.
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//
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// It provides two functions that should be called by Rust:
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// - `bootstrapCompilerRuntime`
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// This functions must be called when creating isolate
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// to properly setup runtime.
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// - `tsCompilerOnMessage`
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// This function must be called when sending a request
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// to the compiler.
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// Removes the `__proto__` for security reasons. This intentionally makes
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// Deno non compliant with ECMA-262 Annex B.2.2.1
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//
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delete Object.prototype.__proto__;
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((window) => {
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const core = window.Deno.core;
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let logDebug = false;
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let logSource = "JS";
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function setLogDebug(debug, source) {
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logDebug = debug;
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if (source) {
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logSource = source;
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}
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}
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function log(...args) {
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if (logDebug) {
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const stringifiedArgs = args.map(JSON.stringify).join(" ");
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core.print(`DEBUG ${logSource} - ${stringifiedArgs}\n`);
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}
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}
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class AssertionError extends Error {
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constructor(msg) {
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super(msg);
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this.name = "AssertionError";
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}
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}
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function assert(cond, msg = "Assertion failed.") {
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if (!cond) {
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throw new AssertionError(msg);
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}
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}
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function notImplemented() {
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throw new Error("not implemented");
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}
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/**
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* @param {import("../dts/typescript").DiagnosticRelatedInformation} diagnostic
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*/
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function fromRelatedInformation({
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start,
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length,
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file,
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messageText: msgText,
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...ri
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}) {
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let messageText;
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let messageChain;
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if (typeof msgText === "object") {
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messageChain = msgText;
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} else {
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messageText = msgText;
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}
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if (start !== undefined && length !== undefined && file) {
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const startPos = file.getLineAndCharacterOfPosition(start);
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const sourceLine = file.getFullText().split("\n")[startPos.line];
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const fileName = file.fileName;
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return {
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start: startPos,
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end: file.getLineAndCharacterOfPosition(start + length),
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fileName,
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messageChain,
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messageText,
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sourceLine,
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...ri,
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};
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} else {
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return {
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messageChain,
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messageText,
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...ri,
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};
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}
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}
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/**
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* @param {import("../dts/typescript").Diagnostic[]} diagnostics
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*/
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function fromTypeScriptDiagnostic(diagnostics) {
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return diagnostics.map(({ relatedInformation: ri, source, ...diag }) => {
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const value = fromRelatedInformation(diag);
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value.relatedInformation = ri
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? ri.map(fromRelatedInformation)
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: undefined;
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value.source = source;
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return value;
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});
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}
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function opNow() {
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const res = core.jsonOpSync("op_now");
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return res.seconds * 1e3 + res.subsecNanos / 1e6;
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}
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// We really don't want to depend on JSON dispatch during snapshotting, so
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// this op exchanges strings with Rust as raw byte arrays.
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function getAsset(name) {
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const opId = core.ops()["op_fetch_asset"];
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const sourceCodeBytes = core.dispatch(opId, core.encode(name));
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return core.decode(sourceCodeBytes);
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}
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// Constants used by `normalizeString` and `resolvePath`
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const CHAR_DOT = 46; /* . */
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const CHAR_FORWARD_SLASH = 47; /* / */
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// Using incremental compile APIs requires that all
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// paths must be either relative or absolute. Since
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// analysis in Rust operates on fully resolved URLs,
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// it makes sense to use the same scheme here.
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const ASSETS = "asset://";
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const OUT_DIR = "deno://";
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const CACHE = "cache:///";
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// This constant is passed to compiler settings when
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// doing incremental compiles. Contents of this
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// file are passed back to Rust and saved to $DENO_DIR.
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const TS_BUILD_INFO = "cache:///tsbuildinfo.json";
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const DEFAULT_COMPILE_OPTIONS = {
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allowJs: false,
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allowNonTsExtensions: true,
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checkJs: false,
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esModuleInterop: true,
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jsx: ts.JsxEmit.React,
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module: ts.ModuleKind.ESNext,
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outDir: OUT_DIR,
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sourceMap: true,
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strict: true,
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removeComments: true,
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target: ts.ScriptTarget.ESNext,
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};
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const CompilerHostTarget = {
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Main: "main",
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Runtime: "runtime",
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Worker: "worker",
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};
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// Warning! The values in this enum are duplicated in `cli/msg.rs`
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// Update carefully!
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const MediaType = {
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0: "JavaScript",
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1: "JSX",
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2: "TypeScript",
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3: "Dts",
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4: "TSX",
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5: "Json",
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6: "Wasm",
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7: "BuildInfo",
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8: "Unknown",
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JavaScript: 0,
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JSX: 1,
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TypeScript: 2,
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Dts: 3,
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TSX: 4,
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Json: 5,
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Wasm: 6,
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BuildInfo: 7,
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Unknown: 6,
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};
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function getExtension(fileName, mediaType) {
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switch (mediaType) {
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case MediaType.JavaScript:
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return ts.Extension.Js;
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case MediaType.JSX:
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return ts.Extension.Jsx;
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case MediaType.TypeScript:
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return fileName.endsWith(".d.ts") ? ts.Extension.Dts : ts.Extension.Ts;
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case MediaType.TSX:
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return ts.Extension.Tsx;
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case MediaType.Wasm:
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// Custom marker for Wasm type.
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return ts.Extension.Js;
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case MediaType.Unknown:
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default:
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throw TypeError(
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`Cannot resolve extension for "${fileName}" with mediaType "${
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MediaType[mediaType]
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}".`,
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);
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}
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}
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/** A global cache of module source files that have been loaded.
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* This cache will be rewritten to be populated on compiler startup
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* with files provided from Rust in request message.
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*/
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const SOURCE_FILE_CACHE = new Map();
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/** A map of maps which cache resolved specifier for each import in a file.
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* This cache is used so `resolveModuleNames` ops is called as few times
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* as possible.
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*
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* First map's key is "referrer" URL ("file://a/b/c/mod.ts")
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* Second map's key is "raw" import specifier ("./foo.ts")
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* Second map's value is resolved import URL ("file:///a/b/c/foo.ts")
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*/
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const RESOLVED_SPECIFIER_CACHE = new Map();
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function parseCompilerOptions(compilerOptions) {
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const { options, errors } = ts.convertCompilerOptionsFromJson(
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compilerOptions,
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"",
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"tsconfig.json",
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);
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return {
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options,
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diagnostics: errors.length ? errors : undefined,
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};
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}
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class SourceFile {
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constructor(json) {
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this.processed = false;
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Object.assign(this, json);
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this.extension = getExtension(this.url, this.mediaType);
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}
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static addToCache(json) {
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if (SOURCE_FILE_CACHE.has(json.url)) {
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throw new TypeError("SourceFile already exists");
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}
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const sf = new SourceFile(json);
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SOURCE_FILE_CACHE.set(sf.url, sf);
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return sf;
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}
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static getCached(url) {
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return SOURCE_FILE_CACHE.get(url);
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}
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static cacheResolvedUrl(resolvedUrl, rawModuleSpecifier, containingFile) {
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containingFile = containingFile || "";
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let innerCache = RESOLVED_SPECIFIER_CACHE.get(containingFile);
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if (!innerCache) {
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innerCache = new Map();
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RESOLVED_SPECIFIER_CACHE.set(containingFile, innerCache);
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}
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innerCache.set(rawModuleSpecifier, resolvedUrl);
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}
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static getResolvedUrl(moduleSpecifier, containingFile) {
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const containingCache = RESOLVED_SPECIFIER_CACHE.get(containingFile);
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if (containingCache) {
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return containingCache.get(moduleSpecifier);
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}
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return undefined;
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}
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}
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function getAssetInternal(filename) {
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const lastSegment = filename.split("/").pop();
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const url = ts.libMap.has(lastSegment)
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? ts.libMap.get(lastSegment)
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: lastSegment;
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const sourceFile = SourceFile.getCached(url);
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if (sourceFile) {
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return sourceFile;
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}
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const name = url.includes(".") ? url : `${url}.d.ts`;
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const sourceCode = getAsset(name);
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return SourceFile.addToCache({
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url,
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filename: `${ASSETS}/${name}`,
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mediaType: MediaType.TypeScript,
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versionHash: "1",
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sourceCode,
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});
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}
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class Host {
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#options;
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#target;
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#writeFile;
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/* Deno specific APIs */
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constructor(
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options,
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target,
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writeFile,
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) {
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this.#target = target;
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this.#writeFile = writeFile;
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this.#options = options;
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}
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get options() {
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return this.#options;
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}
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/* TypeScript CompilerHost APIs */
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fileExists(fileName) {
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log(`compiler::host.fileExists("${fileName}")`);
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return false;
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}
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getCanonicalFileName(fileName) {
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return fileName;
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}
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getCompilationSettings() {
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log("compiler::host.getCompilationSettings()");
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return this.#options;
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}
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getCurrentDirectory() {
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return CACHE;
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}
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getDefaultLibFileName(_options) {
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log("compiler::host.getDefaultLibFileName()");
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switch (this.#target) {
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case CompilerHostTarget.Main:
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case CompilerHostTarget.Runtime:
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return `${ASSETS}/lib.deno.window.d.ts`;
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case CompilerHostTarget.Worker:
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return `${ASSETS}/lib.deno.worker.d.ts`;
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}
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}
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getNewLine() {
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return "\n";
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}
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getSourceFile(
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fileName,
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languageVersion,
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onError,
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shouldCreateNewSourceFile,
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) {
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log("compiler::host.getSourceFile", fileName);
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try {
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assert(!shouldCreateNewSourceFile);
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const sourceFile = fileName.startsWith(ASSETS)
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? getAssetInternal(fileName)
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: SourceFile.getCached(fileName);
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assert(sourceFile != null);
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if (!sourceFile.tsSourceFile) {
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assert(sourceFile.sourceCode != null);
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const tsSourceFileName = fileName.startsWith(ASSETS)
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? sourceFile.filename
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: fileName;
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sourceFile.tsSourceFile = ts.createSourceFile(
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tsSourceFileName,
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sourceFile.sourceCode,
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languageVersion,
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);
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sourceFile.tsSourceFile.version = sourceFile.versionHash;
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delete sourceFile.sourceCode;
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}
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return sourceFile.tsSourceFile;
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} catch (e) {
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if (onError) {
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onError(String(e));
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} else {
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throw e;
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}
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return undefined;
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}
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}
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readFile(_fileName) {
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return notImplemented();
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}
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resolveModuleNames(moduleNames, containingFile) {
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log("compiler::host.resolveModuleNames", {
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moduleNames,
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containingFile,
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});
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const resolved = moduleNames.map((specifier) => {
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const maybeUrl = SourceFile.getResolvedUrl(specifier, containingFile);
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log("compiler::host.resolveModuleNames maybeUrl", {
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specifier,
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maybeUrl,
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});
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let sourceFile = undefined;
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if (specifier.startsWith(ASSETS)) {
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sourceFile = getAssetInternal(specifier);
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} else if (typeof maybeUrl !== "undefined") {
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sourceFile = SourceFile.getCached(maybeUrl);
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}
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if (!sourceFile) {
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return undefined;
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}
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return {
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resolvedFileName: sourceFile.url,
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isExternalLibraryImport: specifier.startsWith(ASSETS),
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extension: sourceFile.extension,
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};
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});
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log(resolved);
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return resolved;
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}
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useCaseSensitiveFileNames() {
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return true;
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}
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writeFile(fileName, data, _writeByteOrderMark, _onError, sourceFiles) {
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log("compiler::host.writeFile", fileName);
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this.#writeFile(fileName, data, sourceFiles);
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}
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}
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class IncrementalCompileHost extends Host {
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#buildInfo = "";
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constructor(
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options,
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target,
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writeFile,
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buildInfo,
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) {
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super(options, target, writeFile);
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if (buildInfo) {
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this.#buildInfo = buildInfo;
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}
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}
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readFile(fileName) {
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if (fileName == TS_BUILD_INFO) {
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return this.#buildInfo;
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}
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throw new Error("unreachable");
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}
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}
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// NOTE: target doesn't really matter here,
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// this is in fact a mock host created just to
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// load all type definitions and snapshot them.
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let SNAPSHOT_HOST = new Host(
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DEFAULT_COMPILE_OPTIONS,
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CompilerHostTarget.Main,
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() => {},
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);
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const SNAPSHOT_COMPILER_OPTIONS = SNAPSHOT_HOST.getCompilationSettings();
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// This is a hacky way of adding our libs to the libs available in TypeScript()
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// as these are internal APIs of TypeScript which maintain valid libs
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ts.libs.push("deno.ns", "deno.window", "deno.worker", "deno.shared_globals");
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ts.libMap.set("deno.ns", "lib.deno.ns.d.ts");
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ts.libMap.set("deno.web", "lib.deno.web.d.ts");
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ts.libMap.set("deno.fetch", "lib.deno.fetch.d.ts");
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ts.libMap.set("deno.window", "lib.deno.window.d.ts");
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ts.libMap.set("deno.worker", "lib.deno.worker.d.ts");
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ts.libMap.set("deno.shared_globals", "lib.deno.shared_globals.d.ts");
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ts.libMap.set("deno.unstable", "lib.deno.unstable.d.ts");
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// this pre-populates the cache at snapshot time of our library files, so they
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// are available in the future when needed.
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SNAPSHOT_HOST.getSourceFile(
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`${ASSETS}/lib.deno.ns.d.ts`,
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ts.ScriptTarget.ESNext,
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);
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SNAPSHOT_HOST.getSourceFile(
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`${ASSETS}/lib.deno.web.d.ts`,
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ts.ScriptTarget.ESNext,
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);
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SNAPSHOT_HOST.getSourceFile(
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`${ASSETS}/lib.deno.fetch.d.ts`,
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ts.ScriptTarget.ESNext,
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);
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SNAPSHOT_HOST.getSourceFile(
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`${ASSETS}/lib.deno.window.d.ts`,
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ts.ScriptTarget.ESNext,
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);
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|
SNAPSHOT_HOST.getSourceFile(
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`${ASSETS}/lib.deno.worker.d.ts`,
|
|
ts.ScriptTarget.ESNext,
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);
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SNAPSHOT_HOST.getSourceFile(
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`${ASSETS}/lib.deno.shared_globals.d.ts`,
|
|
ts.ScriptTarget.ESNext,
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);
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SNAPSHOT_HOST.getSourceFile(
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|
`${ASSETS}/lib.deno.unstable.d.ts`,
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|
ts.ScriptTarget.ESNext,
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);
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|
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// We never use this program; it's only created
|
|
// during snapshotting to hydrate and populate
|
|
// source file cache with lib declaration files.
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|
const _TS_SNAPSHOT_PROGRAM = ts.createProgram({
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|
rootNames: [`${ASSETS}/bootstrap.ts`],
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|
options: SNAPSHOT_COMPILER_OPTIONS,
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|
host: SNAPSHOT_HOST,
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|
});
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|
|
|
// Derference the snapshot host so it can be GCed
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|
SNAPSHOT_HOST = undefined;
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|
|
|
// This function is called only during snapshotting process
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|
const SYSTEM_LOADER = getAsset("system_loader.js");
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|
const SYSTEM_LOADER_ES5 = getAsset("system_loader_es5.js");
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|
|
|
function buildLocalSourceFileCache(sourceFileMap) {
|
|
for (const entry of Object.values(sourceFileMap)) {
|
|
assert(entry.sourceCode.length > 0);
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|
SourceFile.addToCache({
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|
url: entry.url,
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|
filename: entry.url,
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|
mediaType: entry.mediaType,
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sourceCode: entry.sourceCode,
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versionHash: entry.versionHash,
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});
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|
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for (const importDesc of entry.imports) {
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let mappedUrl = importDesc.resolvedSpecifier;
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|
const importedFile = sourceFileMap[importDesc.resolvedSpecifier];
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assert(importedFile);
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|
const isJsOrJsx = importedFile.mediaType === MediaType.JavaScript ||
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importedFile.mediaType === MediaType.JSX;
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|
// If JS or JSX perform substitution for types if available
|
|
if (isJsOrJsx) {
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|
// @deno-types has highest precedence, followed by
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|
// X-TypeScript-Types header
|
|
if (importDesc.resolvedTypeDirective) {
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|
mappedUrl = importDesc.resolvedTypeDirective;
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|
} else if (importedFile.typeHeaders.length > 0) {
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const typeHeaders = importedFile.typeHeaders[0];
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mappedUrl = typeHeaders.resolvedSpecifier;
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} else if (importedFile.typesDirectives.length > 0) {
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const typeDirective = importedFile.typesDirectives[0];
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mappedUrl = typeDirective.resolvedSpecifier;
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}
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}
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mappedUrl = mappedUrl.replace("memory://", "");
|
|
SourceFile.cacheResolvedUrl(mappedUrl, importDesc.specifier, entry.url);
|
|
}
|
|
for (const fileRef of entry.referencedFiles) {
|
|
SourceFile.cacheResolvedUrl(
|
|
fileRef.resolvedSpecifier.replace("memory://", ""),
|
|
fileRef.specifier,
|
|
entry.url,
|
|
);
|
|
}
|
|
for (const fileRef of entry.libDirectives) {
|
|
SourceFile.cacheResolvedUrl(
|
|
fileRef.resolvedSpecifier.replace("memory://", ""),
|
|
fileRef.specifier,
|
|
entry.url,
|
|
);
|
|
}
|
|
}
|
|
}
|
|
|
|
function buildSourceFileCache(sourceFileMap) {
|
|
for (const entry of Object.values(sourceFileMap)) {
|
|
SourceFile.addToCache({
|
|
url: entry.url,
|
|
filename: entry.url,
|
|
mediaType: entry.mediaType,
|
|
sourceCode: entry.sourceCode,
|
|
versionHash: entry.versionHash,
|
|
});
|
|
|
|
for (const importDesc of entry.imports) {
|
|
let mappedUrl = importDesc.resolvedSpecifier;
|
|
const importedFile = sourceFileMap[importDesc.resolvedSpecifier];
|
|
// IMPORTANT: due to HTTP redirects we might end up in situation
|
|
// where URL points to a file with completely different URL.
|
|
// In that case we take value of `redirect` field and cache
|
|
// resolved specifier pointing to the value of the redirect.
|
|
// It's not very elegant solution and should be rethinked.
|
|
assert(importedFile);
|
|
if (importedFile.redirect) {
|
|
mappedUrl = importedFile.redirect;
|
|
}
|
|
const isJsOrJsx = importedFile.mediaType === MediaType.JavaScript ||
|
|
importedFile.mediaType === MediaType.JSX;
|
|
// If JS or JSX perform substitution for types if available
|
|
if (isJsOrJsx) {
|
|
// @deno-types has highest precedence, followed by
|
|
// X-TypeScript-Types header
|
|
if (importDesc.resolvedTypeDirective) {
|
|
mappedUrl = importDesc.resolvedTypeDirective;
|
|
} else if (importedFile.typeHeaders.length > 0) {
|
|
const typeHeaders = importedFile.typeHeaders[0];
|
|
mappedUrl = typeHeaders.resolvedSpecifier;
|
|
} else if (importedFile.typesDirectives.length > 0) {
|
|
const typeDirective = importedFile.typesDirectives[0];
|
|
mappedUrl = typeDirective.resolvedSpecifier;
|
|
}
|
|
}
|
|
|
|
SourceFile.cacheResolvedUrl(mappedUrl, importDesc.specifier, entry.url);
|
|
}
|
|
for (const fileRef of entry.referencedFiles) {
|
|
SourceFile.cacheResolvedUrl(
|
|
fileRef.resolvedSpecifier,
|
|
fileRef.specifier,
|
|
entry.url,
|
|
);
|
|
}
|
|
for (const fileRef of entry.libDirectives) {
|
|
SourceFile.cacheResolvedUrl(
|
|
fileRef.resolvedSpecifier,
|
|
fileRef.specifier,
|
|
entry.url,
|
|
);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Warning! The values in this enum are duplicated in `cli/msg.rs`
|
|
// Update carefully!
|
|
const CompilerRequestType = {
|
|
Compile: 0,
|
|
Bundle: 1,
|
|
RuntimeCompile: 2,
|
|
RuntimeBundle: 3,
|
|
RuntimeTranspile: 4,
|
|
};
|
|
|
|
function createBundleWriteFile(state) {
|
|
return function writeFile(_fileName, data, sourceFiles) {
|
|
assert(sourceFiles != null);
|
|
assert(state.host);
|
|
// we only support single root names for bundles
|
|
assert(state.rootNames.length === 1);
|
|
state.bundleOutput = buildBundle(
|
|
state.rootNames[0],
|
|
data,
|
|
sourceFiles,
|
|
state.host.options.target ?? ts.ScriptTarget.ESNext,
|
|
);
|
|
};
|
|
}
|
|
|
|
function createCompileWriteFile(state) {
|
|
return function writeFile(fileName, data, sourceFiles) {
|
|
const isBuildInfo = fileName === TS_BUILD_INFO;
|
|
|
|
if (isBuildInfo) {
|
|
assert(isBuildInfo);
|
|
state.buildInfo = data;
|
|
return;
|
|
}
|
|
|
|
assert(sourceFiles);
|
|
assert(sourceFiles.length === 1);
|
|
state.emitMap[fileName] = {
|
|
filename: sourceFiles[0].fileName,
|
|
contents: data,
|
|
};
|
|
};
|
|
}
|
|
|
|
function createRuntimeCompileWriteFile(state) {
|
|
return function writeFile(fileName, data, sourceFiles) {
|
|
assert(sourceFiles);
|
|
assert(sourceFiles.length === 1);
|
|
state.emitMap[fileName] = {
|
|
filename: sourceFiles[0].fileName,
|
|
contents: data,
|
|
};
|
|
};
|
|
}
|
|
|
|
const IGNORED_DIAGNOSTICS = [
|
|
// TS2306: File 'file:///Users/rld/src/deno/cli/tests/subdir/amd_like.js' is
|
|
// not a module.
|
|
2306,
|
|
// TS1375: 'await' expressions are only allowed at the top level of a file
|
|
// when that file is a module, but this file has no imports or exports.
|
|
// Consider adding an empty 'export {}' to make this file a module.
|
|
1375,
|
|
// TS1103: 'for-await-of' statement is only allowed within an async function
|
|
// or async generator.
|
|
1103,
|
|
// TS2691: An import path cannot end with a '.ts' extension. Consider
|
|
// importing 'bad-module' instead.
|
|
2691,
|
|
// TS5009: Cannot find the common subdirectory path for the input files.
|
|
5009,
|
|
// TS5055: Cannot write file
|
|
// 'http://localhost:4545/cli/tests/subdir/mt_application_x_javascript.j4.js'
|
|
// because it would overwrite input file.
|
|
5055,
|
|
// TypeScript is overly opinionated that only CommonJS modules kinds can
|
|
// support JSON imports. Allegedly this was fixed in
|
|
// Microsoft/TypeScript#26825 but that doesn't seem to be working here,
|
|
// so we will ignore complaints about this compiler setting.
|
|
5070,
|
|
// TS7016: Could not find a declaration file for module '...'. '...'
|
|
// implicitly has an 'any' type. This is due to `allowJs` being off by
|
|
// default but importing of a JavaScript module.
|
|
7016,
|
|
];
|
|
|
|
const IGNORED_COMPILE_DIAGNOSTICS = [
|
|
// TS1208: All files must be modules when the '--isolatedModules' flag is
|
|
// provided. We can ignore because we guarantuee that all files are
|
|
// modules.
|
|
1208,
|
|
];
|
|
|
|
const stats = [];
|
|
let statsStart = 0;
|
|
|
|
function performanceStart() {
|
|
stats.length = 0;
|
|
// TODO(kitsonk) replace with performance.mark() when landed
|
|
statsStart = opNow();
|
|
ts.performance.enable();
|
|
}
|
|
|
|
function performanceProgram({ program, fileCount }) {
|
|
if (program) {
|
|
if ("getProgram" in program) {
|
|
program = program.getProgram();
|
|
}
|
|
stats.push({ key: "Files", value: program.getSourceFiles().length });
|
|
stats.push({ key: "Nodes", value: program.getNodeCount() });
|
|
stats.push({ key: "Identifiers", value: program.getIdentifierCount() });
|
|
stats.push({ key: "Symbols", value: program.getSymbolCount() });
|
|
stats.push({ key: "Types", value: program.getTypeCount() });
|
|
stats.push({
|
|
key: "Instantiations",
|
|
value: program.getInstantiationCount(),
|
|
});
|
|
} else if (fileCount != null) {
|
|
stats.push({ key: "Files", value: fileCount });
|
|
}
|
|
const programTime = ts.performance.getDuration("Program");
|
|
const bindTime = ts.performance.getDuration("Bind");
|
|
const checkTime = ts.performance.getDuration("Check");
|
|
const emitTime = ts.performance.getDuration("Emit");
|
|
stats.push({ key: "Parse time", value: programTime });
|
|
stats.push({ key: "Bind time", value: bindTime });
|
|
stats.push({ key: "Check time", value: checkTime });
|
|
stats.push({ key: "Emit time", value: emitTime });
|
|
stats.push({
|
|
key: "Total TS time",
|
|
value: programTime + bindTime + checkTime + emitTime,
|
|
});
|
|
}
|
|
|
|
function performanceEnd() {
|
|
// TODO(kitsonk) replace with performance.measure() when landed
|
|
const duration = opNow() - statsStart;
|
|
stats.push({ key: "Compile time", value: duration });
|
|
return stats;
|
|
}
|
|
|
|
function normalizeString(path) {
|
|
let res = "";
|
|
let lastSegmentLength = 0;
|
|
let lastSlash = -1;
|
|
let dots = 0;
|
|
let code;
|
|
for (let i = 0, len = path.length; i <= len; ++i) {
|
|
if (i < len) code = path.charCodeAt(i);
|
|
else if (code === CHAR_FORWARD_SLASH) break;
|
|
else code = CHAR_FORWARD_SLASH;
|
|
|
|
if (code === CHAR_FORWARD_SLASH) {
|
|
if (lastSlash === i - 1 || dots === 1) {
|
|
// NOOP
|
|
} else if (lastSlash !== i - 1 && dots === 2) {
|
|
if (
|
|
res.length < 2 ||
|
|
lastSegmentLength !== 2 ||
|
|
res.charCodeAt(res.length - 1) !== CHAR_DOT ||
|
|
res.charCodeAt(res.length - 2) !== CHAR_DOT
|
|
) {
|
|
if (res.length > 2) {
|
|
const lastSlashIndex = res.lastIndexOf("/");
|
|
if (lastSlashIndex === -1) {
|
|
res = "";
|
|
lastSegmentLength = 0;
|
|
} else {
|
|
res = res.slice(0, lastSlashIndex);
|
|
lastSegmentLength = res.length - 1 - res.lastIndexOf("/");
|
|
}
|
|
lastSlash = i;
|
|
dots = 0;
|
|
continue;
|
|
} else if (res.length === 2 || res.length === 1) {
|
|
res = "";
|
|
lastSegmentLength = 0;
|
|
lastSlash = i;
|
|
dots = 0;
|
|
continue;
|
|
}
|
|
}
|
|
} else {
|
|
if (res.length > 0) res += "/" + path.slice(lastSlash + 1, i);
|
|
else res = path.slice(lastSlash + 1, i);
|
|
lastSegmentLength = i - lastSlash - 1;
|
|
}
|
|
lastSlash = i;
|
|
dots = 0;
|
|
} else if (code === CHAR_DOT && dots !== -1) {
|
|
++dots;
|
|
} else {
|
|
dots = -1;
|
|
}
|
|
}
|
|
return res;
|
|
}
|
|
|
|
function commonPath(paths, sep = "/") {
|
|
const [first = "", ...remaining] = paths;
|
|
if (first === "" || remaining.length === 0) {
|
|
return first.substring(0, first.lastIndexOf(sep) + 1);
|
|
}
|
|
const parts = first.split(sep);
|
|
|
|
let endOfPrefix = parts.length;
|
|
for (const path of remaining) {
|
|
const compare = path.split(sep);
|
|
for (let i = 0; i < endOfPrefix; i++) {
|
|
if (compare[i] !== parts[i]) {
|
|
endOfPrefix = i;
|
|
}
|
|
}
|
|
|
|
if (endOfPrefix === 0) {
|
|
return "";
|
|
}
|
|
}
|
|
const prefix = parts.slice(0, endOfPrefix).join(sep);
|
|
return prefix.endsWith(sep) ? prefix : `${prefix}${sep}`;
|
|
}
|
|
|
|
let rootExports;
|
|
|
|
function normalizeUrl(rootName) {
|
|
const match = /^(\S+:\/{2,3})(.+)$/.exec(rootName);
|
|
if (match) {
|
|
const [, protocol, path] = match;
|
|
return `${protocol}${normalizeString(path)}`;
|
|
} else {
|
|
return rootName;
|
|
}
|
|
}
|
|
|
|
function buildBundle(rootName, data, sourceFiles, target) {
|
|
// when outputting to AMD and a single outfile, TypeScript makes up the module
|
|
// specifiers which are used to define the modules, and doesn't expose them
|
|
// publicly, so we have to try to replicate
|
|
const sources = sourceFiles.map((sf) => sf.fileName);
|
|
const sharedPath = commonPath(sources);
|
|
rootName = normalizeUrl(rootName)
|
|
.replace(sharedPath, "")
|
|
.replace(/\.\w+$/i, "");
|
|
// If one of the modules requires support for top-level-await, TypeScript will
|
|
// emit the execute function as an async function. When this is the case we
|
|
// need to bubble up the TLA to the instantiation, otherwise we instantiate
|
|
// synchronously.
|
|
const hasTla = data.match(/execute:\sasync\sfunction\s/);
|
|
let instantiate;
|
|
if (rootExports && rootExports.length) {
|
|
instantiate = hasTla
|
|
? `const __exp = await __instantiate("${rootName}", true);\n`
|
|
: `const __exp = __instantiate("${rootName}", false);\n`;
|
|
for (const rootExport of rootExports) {
|
|
if (rootExport === "default") {
|
|
instantiate += `export default __exp["${rootExport}"];\n`;
|
|
} else {
|
|
instantiate +=
|
|
`export const ${rootExport} = __exp["${rootExport}"];\n`;
|
|
}
|
|
}
|
|
} else {
|
|
instantiate = hasTla
|
|
? `await __instantiate("${rootName}", true);\n`
|
|
: `__instantiate("${rootName}", false);\n`;
|
|
}
|
|
const es5Bundle = target === ts.ScriptTarget.ES3 ||
|
|
target === ts.ScriptTarget.ES5 ||
|
|
target === ts.ScriptTarget.ES2015 ||
|
|
target === ts.ScriptTarget.ES2016;
|
|
return `${
|
|
es5Bundle ? SYSTEM_LOADER_ES5 : SYSTEM_LOADER
|
|
}\n${data}\n${instantiate}`;
|
|
}
|
|
|
|
function setRootExports(program, rootModule) {
|
|
// get a reference to the type checker, this will let us find symbols from
|
|
// the AST.
|
|
const checker = program.getTypeChecker();
|
|
// get a reference to the main source file for the bundle
|
|
const mainSourceFile = program.getSourceFile(rootModule);
|
|
assert(mainSourceFile);
|
|
// retrieve the internal TypeScript symbol for this AST node
|
|
const mainSymbol = checker.getSymbolAtLocation(mainSourceFile);
|
|
if (!mainSymbol) {
|
|
return;
|
|
}
|
|
rootExports = checker
|
|
.getExportsOfModule(mainSymbol)
|
|
// .getExportsOfModule includes type only symbols which are exported from
|
|
// the module, so we need to try to filter those out. While not critical
|
|
// someone looking at the bundle would think there is runtime code behind
|
|
// that when there isn't. There appears to be no clean way of figuring that
|
|
// out, so inspecting SymbolFlags that might be present that are type only
|
|
.filter(
|
|
(sym) =>
|
|
sym.flags & ts.SymbolFlags.Class ||
|
|
!(
|
|
sym.flags & ts.SymbolFlags.Interface ||
|
|
sym.flags & ts.SymbolFlags.TypeLiteral ||
|
|
sym.flags & ts.SymbolFlags.Signature ||
|
|
sym.flags & ts.SymbolFlags.TypeParameter ||
|
|
sym.flags & ts.SymbolFlags.TypeAlias ||
|
|
sym.flags & ts.SymbolFlags.Type ||
|
|
sym.flags & ts.SymbolFlags.Namespace ||
|
|
sym.flags & ts.SymbolFlags.InterfaceExcludes ||
|
|
sym.flags & ts.SymbolFlags.TypeParameterExcludes ||
|
|
sym.flags & ts.SymbolFlags.TypeAliasExcludes
|
|
),
|
|
)
|
|
.map((sym) => sym.getName());
|
|
}
|
|
|
|
function compile({
|
|
buildInfo,
|
|
compilerOptions,
|
|
rootNames,
|
|
target,
|
|
sourceFileMap,
|
|
type,
|
|
performance,
|
|
}) {
|
|
if (performance) {
|
|
performanceStart();
|
|
}
|
|
log(">>> compile start", { rootNames, type: CompilerRequestType[type] });
|
|
|
|
// When a programme is emitted, TypeScript will call `writeFile` with
|
|
// each file that needs to be emitted. The Deno compiler host delegates
|
|
// this, to make it easier to perform the right actions, which vary
|
|
// based a lot on the request.
|
|
const state = {
|
|
rootNames,
|
|
emitMap: {},
|
|
};
|
|
|
|
let diagnostics = [];
|
|
|
|
const { options, diagnostics: diags } = parseCompilerOptions(
|
|
compilerOptions,
|
|
);
|
|
|
|
diagnostics = diags.filter(
|
|
({ code }) => code != 5023 && !IGNORED_DIAGNOSTICS.includes(code),
|
|
);
|
|
|
|
// TODO(bartlomieju): this options is excluded by `ts.convertCompilerOptionsFromJson`
|
|
// however stuff breaks if it's not passed (type_directives_js_main.js, compiler_js_error.ts)
|
|
options.allowNonTsExtensions = true;
|
|
|
|
const host = new IncrementalCompileHost(
|
|
options,
|
|
target,
|
|
createCompileWriteFile(state),
|
|
buildInfo,
|
|
);
|
|
|
|
buildSourceFileCache(sourceFileMap);
|
|
// if there was a configuration and no diagnostics with it, we will continue
|
|
// to generate the program and possibly emit it.
|
|
if (diagnostics.length === 0) {
|
|
const options = host.getCompilationSettings();
|
|
const program = ts.createIncrementalProgram({
|
|
rootNames,
|
|
options,
|
|
host,
|
|
});
|
|
|
|
// TODO(bartlomieju): check if this is ok
|
|
diagnostics = [
|
|
...program.getConfigFileParsingDiagnostics(),
|
|
...program.getSyntacticDiagnostics(),
|
|
...program.getOptionsDiagnostics(),
|
|
...program.getGlobalDiagnostics(),
|
|
...program.getSemanticDiagnostics(),
|
|
];
|
|
diagnostics = diagnostics.filter(
|
|
({ code }) =>
|
|
!IGNORED_DIAGNOSTICS.includes(code) &&
|
|
!IGNORED_COMPILE_DIAGNOSTICS.includes(code),
|
|
);
|
|
|
|
// We will only proceed with the emit if there are no diagnostics.
|
|
if (diagnostics.length === 0) {
|
|
const emitResult = program.emit();
|
|
// If `checkJs` is off we still might be compiling entry point JavaScript file
|
|
// (if it has `.ts` imports), but it won't be emitted. In that case we skip
|
|
// assertion.
|
|
if (options.checkJs) {
|
|
assert(
|
|
emitResult.emitSkipped === false,
|
|
"Unexpected skip of the emit.",
|
|
);
|
|
}
|
|
// emitResult.diagnostics is `readonly` in TS3.5+ and can't be assigned
|
|
// without casting.
|
|
diagnostics = emitResult.diagnostics;
|
|
}
|
|
performanceProgram({ program });
|
|
}
|
|
|
|
log("<<< compile end", { rootNames, type: CompilerRequestType[type] });
|
|
const stats = performance ? performanceEnd() : undefined;
|
|
|
|
return {
|
|
emitMap: state.emitMap,
|
|
buildInfo: state.buildInfo,
|
|
diagnostics: fromTypeScriptDiagnostic(diagnostics),
|
|
stats,
|
|
};
|
|
}
|
|
|
|
function bundle({
|
|
compilerOptions,
|
|
rootNames,
|
|
target,
|
|
sourceFileMap,
|
|
type,
|
|
performance,
|
|
}) {
|
|
if (performance) {
|
|
performanceStart();
|
|
}
|
|
log(">>> bundle start", {
|
|
rootNames,
|
|
type: CompilerRequestType[type],
|
|
});
|
|
|
|
// When a programme is emitted, TypeScript will call `writeFile` with
|
|
// each file that needs to be emitted. The Deno compiler host delegates
|
|
// this, to make it easier to perform the right actions, which vary
|
|
// based a lot on the request.
|
|
const state = {
|
|
rootNames,
|
|
bundleOutput: undefined,
|
|
};
|
|
|
|
const { options, diagnostics: diags } = parseCompilerOptions(
|
|
compilerOptions,
|
|
);
|
|
|
|
diagnostics = diags.filter(
|
|
({ code }) => code != 5023 && !IGNORED_DIAGNOSTICS.includes(code),
|
|
);
|
|
|
|
// TODO(bartlomieju): this options is excluded by `ts.convertCompilerOptionsFromJson`
|
|
// however stuff breaks if it's not passed (type_directives_js_main.js)
|
|
options.allowNonTsExtensions = true;
|
|
|
|
const host = new Host(
|
|
options,
|
|
target,
|
|
createBundleWriteFile(state),
|
|
);
|
|
state.host = host;
|
|
|
|
buildSourceFileCache(sourceFileMap);
|
|
// if there was a configuration and no diagnostics with it, we will continue
|
|
// to generate the program and possibly emit it.
|
|
if (diagnostics.length === 0) {
|
|
const options = host.getCompilationSettings();
|
|
const program = ts.createProgram({
|
|
rootNames,
|
|
options,
|
|
host,
|
|
});
|
|
|
|
diagnostics = ts
|
|
.getPreEmitDiagnostics(program)
|
|
.filter(({ code }) => !IGNORED_DIAGNOSTICS.includes(code));
|
|
|
|
// We will only proceed with the emit if there are no diagnostics.
|
|
if (diagnostics.length === 0) {
|
|
// we only support a single root module when bundling
|
|
assert(rootNames.length === 1);
|
|
setRootExports(program, rootNames[0]);
|
|
const emitResult = program.emit();
|
|
assert(
|
|
emitResult.emitSkipped === false,
|
|
"Unexpected skip of the emit.",
|
|
);
|
|
// emitResult.diagnostics is `readonly` in TS3.5+ and can't be assigned
|
|
// without casting.
|
|
diagnostics = emitResult.diagnostics;
|
|
}
|
|
if (performance) {
|
|
performanceProgram({ program });
|
|
}
|
|
}
|
|
|
|
let bundleOutput;
|
|
|
|
if (diagnostics.length === 0) {
|
|
assert(state.bundleOutput);
|
|
bundleOutput = state.bundleOutput;
|
|
}
|
|
|
|
const stats = performance ? performanceEnd() : undefined;
|
|
|
|
const result = {
|
|
bundleOutput,
|
|
diagnostics: fromTypeScriptDiagnostic(diagnostics),
|
|
stats,
|
|
};
|
|
|
|
log("<<< bundle end", {
|
|
rootNames,
|
|
type: CompilerRequestType[type],
|
|
});
|
|
|
|
return result;
|
|
}
|
|
|
|
function runtimeCompile(request) {
|
|
const { compilerOptions, rootNames, target, sourceFileMap } = request;
|
|
|
|
log(">>> runtime compile start", {
|
|
rootNames,
|
|
});
|
|
|
|
// if there are options, convert them into TypeScript compiler options,
|
|
// and resolve any external file references
|
|
const result = parseCompilerOptions(
|
|
compilerOptions,
|
|
);
|
|
const options = result.options;
|
|
// TODO(bartlomieju): this options is excluded by `ts.convertCompilerOptionsFromJson`
|
|
// however stuff breaks if it's not passed (type_directives_js_main.js, compiler_js_error.ts)
|
|
options.allowNonTsExtensions = true;
|
|
|
|
buildLocalSourceFileCache(sourceFileMap);
|
|
|
|
const state = {
|
|
rootNames,
|
|
emitMap: {},
|
|
};
|
|
const host = new Host(
|
|
options,
|
|
target,
|
|
createRuntimeCompileWriteFile(state),
|
|
);
|
|
const program = ts.createProgram({
|
|
rootNames,
|
|
options: host.getCompilationSettings(),
|
|
host,
|
|
});
|
|
|
|
const diagnostics = ts
|
|
.getPreEmitDiagnostics(program)
|
|
.filter(({ code }) =>
|
|
!IGNORED_DIAGNOSTICS.includes(code) &&
|
|
!IGNORED_COMPILE_DIAGNOSTICS.includes(code)
|
|
);
|
|
|
|
const emitResult = program.emit();
|
|
assert(emitResult.emitSkipped === false, "Unexpected skip of the emit.");
|
|
|
|
log("<<< runtime compile finish", {
|
|
rootNames,
|
|
emitMap: Object.keys(state.emitMap),
|
|
});
|
|
|
|
const maybeDiagnostics = diagnostics.length
|
|
? fromTypeScriptDiagnostic(diagnostics)
|
|
: [];
|
|
|
|
return {
|
|
diagnostics: maybeDiagnostics,
|
|
emitMap: state.emitMap,
|
|
};
|
|
}
|
|
|
|
function runtimeBundle(request) {
|
|
const { compilerOptions, rootNames, target, sourceFileMap } = request;
|
|
|
|
log(">>> runtime bundle start", {
|
|
rootNames,
|
|
});
|
|
|
|
// if there are options, convert them into TypeScript compiler options,
|
|
// and resolve any external file references
|
|
const result = parseCompilerOptions(
|
|
compilerOptions,
|
|
);
|
|
const options = result.options;
|
|
// TODO(bartlomieju): this options is excluded by `ts.convertCompilerOptionsFromJson`
|
|
// however stuff breaks if it's not passed (type_directives_js_main.js, compiler_js_error.ts)
|
|
options.allowNonTsExtensions = true;
|
|
|
|
buildLocalSourceFileCache(sourceFileMap);
|
|
|
|
const state = {
|
|
rootNames,
|
|
bundleOutput: undefined,
|
|
};
|
|
|
|
const host = new Host(
|
|
options,
|
|
target,
|
|
createBundleWriteFile(state),
|
|
);
|
|
state.host = host;
|
|
|
|
const program = ts.createProgram({
|
|
rootNames,
|
|
options: host.getCompilationSettings(),
|
|
host,
|
|
});
|
|
|
|
setRootExports(program, rootNames[0]);
|
|
const diagnostics = ts
|
|
.getPreEmitDiagnostics(program)
|
|
.filter(({ code }) => !IGNORED_DIAGNOSTICS.includes(code));
|
|
|
|
const emitResult = program.emit();
|
|
|
|
assert(emitResult.emitSkipped === false, "Unexpected skip of the emit.");
|
|
|
|
log("<<< runtime bundle finish", {
|
|
rootNames,
|
|
});
|
|
|
|
const maybeDiagnostics = diagnostics.length
|
|
? fromTypeScriptDiagnostic(diagnostics)
|
|
: [];
|
|
|
|
return {
|
|
diagnostics: maybeDiagnostics,
|
|
output: state.bundleOutput,
|
|
};
|
|
}
|
|
|
|
function runtimeTranspile(request) {
|
|
const result = {};
|
|
const { sources, compilerOptions } = request;
|
|
|
|
const parseResult = parseCompilerOptions(
|
|
compilerOptions,
|
|
);
|
|
const options = parseResult.options;
|
|
// TODO(bartlomieju): this options is excluded by `ts.convertCompilerOptionsFromJson`
|
|
// however stuff breaks if it's not passed (type_directives_js_main.js, compiler_js_error.ts)
|
|
options.allowNonTsExtensions = true;
|
|
|
|
for (const [fileName, inputText] of Object.entries(sources)) {
|
|
const { outputText: source, sourceMapText: map } = ts.transpileModule(
|
|
inputText,
|
|
{
|
|
fileName,
|
|
compilerOptions: options,
|
|
},
|
|
);
|
|
result[fileName] = { source, map };
|
|
}
|
|
return Promise.resolve(result);
|
|
}
|
|
|
|
function opCompilerRespond(msg) {
|
|
core.jsonOpSync("op_compiler_respond", msg);
|
|
}
|
|
|
|
async function tsCompilerOnMessage(msg) {
|
|
const request = msg.data;
|
|
switch (request.type) {
|
|
case CompilerRequestType.Compile: {
|
|
const result = compile(request);
|
|
opCompilerRespond(result);
|
|
break;
|
|
}
|
|
case CompilerRequestType.Bundle: {
|
|
const result = bundle(request);
|
|
opCompilerRespond(result);
|
|
break;
|
|
}
|
|
case CompilerRequestType.RuntimeCompile: {
|
|
const result = runtimeCompile(request);
|
|
opCompilerRespond(result);
|
|
break;
|
|
}
|
|
case CompilerRequestType.RuntimeBundle: {
|
|
const result = runtimeBundle(request);
|
|
opCompilerRespond(result);
|
|
break;
|
|
}
|
|
case CompilerRequestType.RuntimeTranspile: {
|
|
const result = await runtimeTranspile(request);
|
|
opCompilerRespond(result);
|
|
break;
|
|
}
|
|
default:
|
|
throw new Error(
|
|
`!!! unhandled CompilerRequestType: ${request.type} (${
|
|
CompilerRequestType[request.type]
|
|
})`,
|
|
);
|
|
}
|
|
}
|
|
|
|
function runtimeStart(source) {
|
|
core.ops();
|
|
// First we send an empty `Start` message to let the privileged side know we
|
|
// are ready. The response should be a `StartRes` message containing the CLI
|
|
// args and other info.
|
|
const s = core.jsonOpSync("op_start");
|
|
setLogDebug(s.debugFlag, source);
|
|
return s;
|
|
}
|
|
|
|
let hasBootstrapped = false;
|
|
|
|
function bootstrapCompilerRuntime() {
|
|
if (hasBootstrapped) {
|
|
throw new Error("Worker runtime already bootstrapped");
|
|
}
|
|
hasBootstrapped = true;
|
|
runtimeStart("TS");
|
|
}
|
|
|
|
globalThis.bootstrapCompilerRuntime = bootstrapCompilerRuntime;
|
|
globalThis.tsCompilerOnMessage = tsCompilerOnMessage;
|
|
})(this);
|