mirror of
https://github.com/denoland/deno.git
synced 2024-12-26 17:19:06 -05:00
8be2bbf074
Support for Wasm modules.
Note this implements the standard where the default export is the
instance (not the module). The module will come later with source phase
imports.
```ts
import { add } from "./math.wasm";
console.log(add(1, 2));
```
1413 lines
44 KiB
JavaScript
1413 lines
44 KiB
JavaScript
// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
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// @ts-check
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/// <reference path="./compiler.d.ts" />
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// deno-lint-ignore-file no-undef
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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 type check TypeScript, and in some
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// instances convert TypeScript to JavaScript.
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// Removes the `__proto__` for security reasons.
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// https://tc39.es/ecma262/#sec-get-object.prototype.__proto__
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delete Object.prototype.__proto__;
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((/** @type {any} */ window) => {
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/** @type {DenoCore} */
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const core = window.Deno.core;
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const ops = core.ops;
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let logDebug = false;
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let logSource = "JS";
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// The map from the normalized specifier to the original.
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// TypeScript normalizes the specifier in its internal processing,
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// but the original specifier is needed when looking up the source from the runtime.
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// This map stores that relationship, and the original can be restored by the
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// normalized specifier.
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// See: https://github.com/denoland/deno/issues/9277#issuecomment-769653834
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/** @type {Map<string, string>} */
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const normalizedToOriginalMap = new Map();
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/** @type {ReadonlySet<string>} */
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const unstableDenoProps = new Set([
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"AtomicOperation",
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"DatagramConn",
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"Kv",
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"KvListIterator",
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"KvU64",
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"UnixConnectOptions",
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"UnixListenOptions",
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"listen",
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"listenDatagram",
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"openKv",
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]);
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const unstableMsgSuggestion =
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"If not, try changing the 'lib' compiler option to include 'deno.unstable' " +
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"or add a triple-slash directive to the top of your entrypoint (main file): " +
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'/// <reference lib="deno.unstable" />';
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/**
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* @param {unknown} value
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* @returns {value is ts.CreateSourceFileOptions}
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*/
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function isCreateSourceFileOptions(value) {
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return value != null && typeof value === "object" &&
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"languageVersion" in value;
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}
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/**
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* @param {ts.ScriptTarget | ts.CreateSourceFileOptions | undefined} versionOrOptions
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* @returns {ts.CreateSourceFileOptions}
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*/
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function getCreateSourceFileOptions(versionOrOptions) {
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return isCreateSourceFileOptions(versionOrOptions)
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? versionOrOptions
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: { languageVersion: versionOrOptions ?? ts.ScriptTarget.ESNext };
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}
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/**
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* @param debug {boolean}
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* @param source {string}
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*/
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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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/** @param msg {string} */
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function printStderr(msg) {
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core.print(msg, true);
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}
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/** @param args {any[]} */
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function debug(...args) {
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if (logDebug) {
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const stringifiedArgs = args.map((arg) =>
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typeof arg === "string" ? arg : JSON.stringify(arg)
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).join(" ");
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printStderr(`DEBUG ${logSource} - ${stringifiedArgs}\n`);
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}
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}
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/** @param args {any[]} */
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function error(...args) {
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const stringifiedArgs = args.map((arg) =>
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typeof arg === "string" || arg instanceof Error
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? String(arg)
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: JSON.stringify(arg)
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).join(" ");
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printStderr(`ERROR ${logSource} = ${stringifiedArgs}\n`);
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}
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class AssertionError extends Error {
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/** @param msg {string} */
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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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/** @param cond {boolean} */
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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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// In the case of the LSP, this will only ever contain the assets.
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/** @type {Map<string, ts.SourceFile>} */
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const sourceFileCache = new Map();
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/** @type {Map<string, ts.IScriptSnapshot & { isCjs?: boolean; }>} */
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const scriptSnapshotCache = new Map();
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/** @type {Map<string, number>} */
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const sourceRefCounts = new Map();
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/** @type {Map<string, string>} */
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const scriptVersionCache = new Map();
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/** @type {Map<string, boolean>} */
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const isNodeSourceFileCache = new Map();
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// Maps asset specifiers to the first scope that the asset was loaded into.
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/** @type {Map<string, string | null>} */
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const assetScopes = new Map();
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/** @type {number | null} */
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let projectVersionCache = null;
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/** @type {string | null} */
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let lastRequestMethod = null;
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/** @type {string | null} */
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let lastRequestScope = null;
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const ChangeKind = {
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Opened: 0,
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Modified: 1,
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Closed: 2,
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};
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/**
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* @param {ts.CompilerOptions | ts.MinimalResolutionCacheHost} settingsOrHost
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* @returns {ts.CompilerOptions}
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*/
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function getCompilationSettings(settingsOrHost) {
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if (typeof settingsOrHost.getCompilationSettings === "function") {
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return settingsOrHost.getCompilationSettings();
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}
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return /** @type {ts.CompilerOptions} */ (settingsOrHost);
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}
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// We need to use a custom document registry in order to provide source files
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// with an impliedNodeFormat to the ts language service
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/** @type {Map<string, ts.SourceFile>} */
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const documentRegistrySourceFileCache = new Map();
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const { getKeyForCompilationSettings } = ts.createDocumentRegistry(); // reuse this code
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/** @type {ts.DocumentRegistry} */
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const documentRegistry = {
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acquireDocument(
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fileName,
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compilationSettingsOrHost,
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scriptSnapshot,
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version,
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scriptKind,
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sourceFileOptions,
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) {
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const key = getKeyForCompilationSettings(
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getCompilationSettings(compilationSettingsOrHost),
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);
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return this.acquireDocumentWithKey(
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fileName,
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/** @type {ts.Path} */ (fileName),
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compilationSettingsOrHost,
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key,
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scriptSnapshot,
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version,
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scriptKind,
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sourceFileOptions,
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);
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},
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acquireDocumentWithKey(
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fileName,
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path,
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_compilationSettingsOrHost,
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key,
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scriptSnapshot,
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version,
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scriptKind,
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sourceFileOptions,
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) {
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const mapKey = path + key;
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let sourceFile = documentRegistrySourceFileCache.get(mapKey);
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if (!sourceFile || sourceFile.version !== version) {
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const isCjs = /** @type {any} */ (scriptSnapshot).isCjs;
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sourceFile = ts.createLanguageServiceSourceFile(
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fileName,
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scriptSnapshot,
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{
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...getCreateSourceFileOptions(sourceFileOptions),
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impliedNodeFormat: isCjs
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? ts.ModuleKind.CommonJS
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: ts.ModuleKind.ESNext,
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// in the lsp we want to be able to show documentation
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jsDocParsingMode: ts.JSDocParsingMode.ParseAll,
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},
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version,
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true,
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scriptKind,
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);
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documentRegistrySourceFileCache.set(mapKey, sourceFile);
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}
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const sourceRefCount = sourceRefCounts.get(fileName) ?? 0;
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sourceRefCounts.set(fileName, sourceRefCount + 1);
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return sourceFile;
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},
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updateDocument(
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fileName,
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compilationSettingsOrHost,
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scriptSnapshot,
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version,
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scriptKind,
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sourceFileOptions,
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) {
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const key = getKeyForCompilationSettings(
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getCompilationSettings(compilationSettingsOrHost),
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);
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return this.updateDocumentWithKey(
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fileName,
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/** @type {ts.Path} */ (fileName),
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compilationSettingsOrHost,
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key,
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scriptSnapshot,
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version,
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scriptKind,
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sourceFileOptions,
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);
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},
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updateDocumentWithKey(
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fileName,
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path,
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compilationSettingsOrHost,
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key,
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scriptSnapshot,
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version,
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scriptKind,
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sourceFileOptions,
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) {
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const mapKey = path + key;
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let sourceFile = documentRegistrySourceFileCache.get(mapKey) ??
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this.acquireDocumentWithKey(
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fileName,
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path,
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compilationSettingsOrHost,
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key,
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scriptSnapshot,
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version,
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scriptKind,
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sourceFileOptions,
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);
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if (sourceFile.version !== version) {
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sourceFile = ts.updateLanguageServiceSourceFile(
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sourceFile,
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scriptSnapshot,
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version,
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scriptSnapshot.getChangeRange(
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/** @type {ts.IScriptSnapshot} */ (sourceFile.scriptSnapShot),
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),
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);
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documentRegistrySourceFileCache.set(mapKey, sourceFile);
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}
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return sourceFile;
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},
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getKeyForCompilationSettings(settings) {
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return getKeyForCompilationSettings(settings);
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},
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releaseDocument(
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fileName,
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compilationSettings,
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scriptKind,
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impliedNodeFormat,
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) {
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const key = getKeyForCompilationSettings(compilationSettings);
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return this.releaseDocumentWithKey(
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/** @type {ts.Path} */ (fileName),
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key,
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scriptKind,
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impliedNodeFormat,
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);
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},
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releaseDocumentWithKey(path, key, _scriptKind, _impliedNodeFormat) {
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const sourceRefCount = sourceRefCounts.get(path) ?? 1;
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if (sourceRefCount <= 1) {
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sourceRefCounts.delete(path);
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// We call `cleanupSemanticCache` for other purposes, don't bust the
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// source cache in this case.
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if (lastRequestMethod != "cleanupSemanticCache") {
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const mapKey = path + key;
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documentRegistrySourceFileCache.delete(mapKey);
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scriptSnapshotCache.delete(path);
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ops.op_release(path);
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}
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} else {
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sourceRefCounts.set(path, sourceRefCount - 1);
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}
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},
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reportStats() {
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return "[]";
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},
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};
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ts.deno.setIsNodeSourceFileCallback((sourceFile) => {
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const fileName = sourceFile.fileName;
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let isNodeSourceFile = isNodeSourceFileCache.get(fileName);
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if (isNodeSourceFile == null) {
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const result = ops.op_is_node_file(fileName);
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isNodeSourceFile = /** @type {boolean} */ (result);
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isNodeSourceFileCache.set(fileName, isNodeSourceFile);
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}
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return isNodeSourceFile;
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});
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/**
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* @param msg {string}
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* @param code {number}
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*/
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function formatMessage(msg, code) {
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switch (code) {
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case 2304: {
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if (msg === "Cannot find name 'Deno'.") {
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msg += " Do you need to change your target library? " +
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"Try changing the 'lib' compiler option to include 'deno.ns' " +
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"or add a triple-slash directive to the top of your entrypoint " +
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'(main file): /// <reference lib="deno.ns" />';
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}
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return msg;
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}
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case 2339: {
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const property = getProperty();
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if (property && unstableDenoProps.has(property)) {
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return `${msg} 'Deno.${property}' is an unstable API. ${unstableMsgSuggestion}`;
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}
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return msg;
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}
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default: {
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const property = getProperty();
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if (property && unstableDenoProps.has(property)) {
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const suggestion = getMsgSuggestion();
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if (suggestion) {
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return `${msg} 'Deno.${property}' is an unstable API. Did you mean '${suggestion}'? ${unstableMsgSuggestion}`;
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}
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}
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return msg;
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}
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}
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function getProperty() {
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return /Property '([^']+)' does not exist on type 'typeof Deno'/
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.exec(msg)?.[1];
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}
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function getMsgSuggestion() {
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return / Did you mean '([^']+)'\?/.exec(msg)?.[1];
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}
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}
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/** @param {ts.DiagnosticRelatedInformation} diagnostic */
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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 = formatMessage(msgText, ri.code);
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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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/** @param {readonly ts.Diagnostic[]} diagnostics */
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function fromTypeScriptDiagnostics(diagnostics) {
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return diagnostics.map(({ relatedInformation: ri, source, ...diag }) => {
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/** @type {any} */
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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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// 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_URL_PREFIX = "asset:///";
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const CACHE_URL_PREFIX = "cache:///";
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/** Diagnostics that are intentionally ignored when compiling TypeScript in
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* Deno, as they provide misleading or incorrect information. */
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const IGNORED_DIAGNOSTICS = [
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// TS1452: 'resolution-mode' assertions are only supported when `moduleResolution` is `node16` or `nodenext`.
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// We specify the resolution mode to be CommonJS for some npm files and this
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// diagnostic gets generated even though we're using custom module resolution.
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1452,
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// Module '...' cannot be imported using this construct. The specifier only resolves to an
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// ES module, which cannot be imported with 'require'.
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1471,
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// TS1479: The current file is a CommonJS module whose imports will produce 'require' calls;
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// however, the referenced file is an ECMAScript module and cannot be imported with 'require'.
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1479,
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// TS2306: File '.../index.d.ts' is not a module.
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// We get this for `x-typescript-types` declaration files which don't export
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// anything. We prefer to treat these as modules with no exports.
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2306,
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// TS2688: Cannot find type definition file for '...'.
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// We ignore because type definition files can end with '.ts'.
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2688,
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// TS2792: Cannot find module. Did you mean to set the 'moduleResolution'
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// option to 'node', or to add aliases to the 'paths' option?
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2792,
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// TS2307: Cannot find module '{0}' or its corresponding type declarations.
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2307,
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// TS5009: Cannot find the common subdirectory path for the input files.
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5009,
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// TS5055: Cannot write file
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// 'http://localhost:4545/subdir/mt_application_x_javascript.j4.js'
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// because it would overwrite input file.
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5055,
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// TypeScript is overly opinionated that only CommonJS modules kinds can
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// support JSON imports. Allegedly this was fixed in
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// Microsoft/TypeScript#26825 but that doesn't seem to be working here,
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// so we will ignore complaints about this compiler setting.
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5070,
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// TS7016: Could not find a declaration file for module '...'. '...'
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|
// implicitly has an 'any' type. This is due to `allowJs` being off by
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// default but importing of a JavaScript module.
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|
7016,
|
|
];
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|
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const SNAPSHOT_COMPILE_OPTIONS = {
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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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noEmit: true,
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strict: true,
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target: ts.ScriptTarget.ESNext,
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lib: ["lib.deno.window.d.ts"],
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};
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|
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// todo(dsherret): can we remove this and just use ts.OperationCanceledException?
|
|
/** Error thrown on cancellation. */
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class OperationCanceledError extends Error {
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}
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|
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/**
|
|
* This implementation calls into Rust to check if Tokio's cancellation token
|
|
* has already been canceled.
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|
* @implements {ts.CancellationToken}
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|
*/
|
|
class CancellationToken {
|
|
isCancellationRequested() {
|
|
return ops.op_is_cancelled();
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|
}
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|
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throwIfCancellationRequested() {
|
|
if (this.isCancellationRequested()) {
|
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throw new OperationCanceledError();
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}
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}
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}
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|
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/** @typedef {{
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* ls: ts.LanguageService & { [k:string]: any },
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|
* compilerOptions: ts.CompilerOptions,
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|
* }} LanguageServiceEntry */
|
|
/** @type {{ unscoped: LanguageServiceEntry, byScope: Map<string, LanguageServiceEntry> }} */
|
|
const languageServiceEntries = {
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|
// @ts-ignore Will be set later.
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|
unscoped: null,
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|
byScope: new Map(),
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|
};
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|
|
/** @type {{ unscoped: string[], byScope: Map<string, string[]> } | null} */
|
|
let scriptNamesCache = null;
|
|
|
|
/** An object literal of the incremental compiler host, which provides the
|
|
* specific "bindings" to the Deno environment that tsc needs to work.
|
|
*
|
|
* @type {ts.CompilerHost & ts.LanguageServiceHost} */
|
|
const host = {
|
|
fileExists(specifier) {
|
|
if (logDebug) {
|
|
debug(`host.fileExists("${specifier}")`);
|
|
}
|
|
// TODO(bartlomieju): is this assumption still valid?
|
|
// this is used by typescript to find the libs path
|
|
// so we can completely ignore it
|
|
return false;
|
|
},
|
|
readFile(specifier) {
|
|
if (logDebug) {
|
|
debug(`host.readFile("${specifier}")`);
|
|
}
|
|
return ops.op_load(specifier)?.data;
|
|
},
|
|
getCancellationToken() {
|
|
// createLanguageService will call this immediately and cache it
|
|
return new CancellationToken();
|
|
},
|
|
getProjectVersion() {
|
|
if (
|
|
projectVersionCache
|
|
) {
|
|
debug(`getProjectVersion cache hit : ${projectVersionCache}`);
|
|
return projectVersionCache;
|
|
}
|
|
const projectVersion = ops.op_project_version();
|
|
projectVersionCache = projectVersion;
|
|
debug(`getProjectVersion cache miss : ${projectVersionCache}`);
|
|
return projectVersion;
|
|
},
|
|
// @ts-ignore Undocumented method.
|
|
getModuleSpecifierCache() {
|
|
return moduleSpecifierCache;
|
|
},
|
|
// @ts-ignore Undocumented method.
|
|
getCachedExportInfoMap() {
|
|
return exportMapCache;
|
|
},
|
|
getGlobalTypingsCacheLocation() {
|
|
return undefined;
|
|
},
|
|
// @ts-ignore Undocumented method.
|
|
toPath(fileName) {
|
|
// @ts-ignore Undocumented function.
|
|
ts.toPath(
|
|
fileName,
|
|
this.getCurrentDirectory(),
|
|
this.getCanonicalFileName.bind(this),
|
|
);
|
|
},
|
|
// @ts-ignore Undocumented method.
|
|
watchNodeModulesForPackageJsonChanges() {
|
|
return { close() {} };
|
|
},
|
|
getSourceFile(
|
|
specifier,
|
|
languageVersion,
|
|
_onError,
|
|
// this is not used by the lsp because source
|
|
// files are created in the document registry
|
|
_shouldCreateNewSourceFile,
|
|
) {
|
|
if (logDebug) {
|
|
debug(
|
|
`host.getSourceFile("${specifier}", ${
|
|
ts.ScriptTarget[
|
|
getCreateSourceFileOptions(languageVersion).languageVersion
|
|
]
|
|
})`,
|
|
);
|
|
}
|
|
|
|
// Needs the original specifier
|
|
specifier = normalizedToOriginalMap.get(specifier) ?? specifier;
|
|
|
|
let sourceFile = sourceFileCache.get(specifier);
|
|
if (sourceFile) {
|
|
return sourceFile;
|
|
}
|
|
|
|
/** @type {{ data: string; scriptKind: ts.ScriptKind; version: string; isCjs: boolean }} */
|
|
const fileInfo = ops.op_load(specifier);
|
|
if (!fileInfo) {
|
|
return undefined;
|
|
}
|
|
const { data, scriptKind, version, isCjs } = fileInfo;
|
|
assert(
|
|
data != null,
|
|
`"data" is unexpectedly null for "${specifier}".`,
|
|
);
|
|
|
|
sourceFile = ts.createSourceFile(
|
|
specifier,
|
|
data,
|
|
{
|
|
...getCreateSourceFileOptions(languageVersion),
|
|
impliedNodeFormat: isCjs
|
|
? ts.ModuleKind.CommonJS
|
|
: ts.ModuleKind.ESNext,
|
|
// no need to parse docs for `deno check`
|
|
jsDocParsingMode: ts.JSDocParsingMode.ParseForTypeErrors,
|
|
},
|
|
false,
|
|
scriptKind,
|
|
);
|
|
sourceFile.moduleName = specifier;
|
|
sourceFile.version = version;
|
|
if (specifier.startsWith(ASSETS_URL_PREFIX)) {
|
|
sourceFile.version = "1";
|
|
}
|
|
sourceFileCache.set(specifier, sourceFile);
|
|
scriptVersionCache.set(specifier, version);
|
|
return sourceFile;
|
|
},
|
|
getDefaultLibFileName() {
|
|
return `${ASSETS_URL_PREFIX}lib.esnext.d.ts`;
|
|
},
|
|
getDefaultLibLocation() {
|
|
return ASSETS_URL_PREFIX;
|
|
},
|
|
writeFile(fileName, data, _writeByteOrderMark, _onError, _sourceFiles) {
|
|
if (logDebug) {
|
|
debug(`host.writeFile("${fileName}")`);
|
|
}
|
|
return ops.op_emit(
|
|
data,
|
|
fileName,
|
|
);
|
|
},
|
|
getCurrentDirectory() {
|
|
if (logDebug) {
|
|
debug(`host.getCurrentDirectory()`);
|
|
}
|
|
return CACHE_URL_PREFIX;
|
|
},
|
|
getCanonicalFileName(fileName) {
|
|
return fileName;
|
|
},
|
|
useCaseSensitiveFileNames() {
|
|
return true;
|
|
},
|
|
getNewLine() {
|
|
return "\n";
|
|
},
|
|
resolveTypeReferenceDirectives(
|
|
typeDirectiveNames,
|
|
containingFilePath,
|
|
redirectedReference,
|
|
options,
|
|
containingFileMode,
|
|
) {
|
|
return typeDirectiveNames.map((arg) => {
|
|
/** @type {ts.FileReference} */
|
|
const fileReference = typeof arg === "string"
|
|
? {
|
|
pos: -1,
|
|
end: -1,
|
|
fileName: arg,
|
|
}
|
|
: arg;
|
|
if (fileReference.fileName.startsWith("npm:")) {
|
|
/** @type {[string, ts.Extension] | undefined} */
|
|
const resolved = ops.op_resolve(
|
|
containingFilePath,
|
|
containingFileMode === ts.ModuleKind.CommonJS,
|
|
[fileReference.fileName],
|
|
)?.[0];
|
|
if (resolved) {
|
|
return {
|
|
primary: true,
|
|
resolvedFileName: resolved[0],
|
|
};
|
|
} else {
|
|
return undefined;
|
|
}
|
|
} else {
|
|
return ts.resolveTypeReferenceDirective(
|
|
fileReference.fileName,
|
|
containingFilePath,
|
|
options,
|
|
host,
|
|
redirectedReference,
|
|
undefined,
|
|
containingFileMode ?? fileReference.resolutionMode,
|
|
).resolvedTypeReferenceDirective;
|
|
}
|
|
});
|
|
},
|
|
resolveModuleNames(
|
|
specifiers,
|
|
base,
|
|
_reusedNames,
|
|
_redirectedReference,
|
|
_options,
|
|
containingSourceFile,
|
|
) {
|
|
if (logDebug) {
|
|
debug(`host.resolveModuleNames()`);
|
|
debug(` base: ${base}`);
|
|
debug(` specifiers: ${specifiers.join(", ")}`);
|
|
}
|
|
/** @type {Array<[string, ts.Extension] | undefined>} */
|
|
const resolved = ops.op_resolve(
|
|
base,
|
|
containingSourceFile?.impliedNodeFormat === ts.ModuleKind.CommonJS,
|
|
specifiers,
|
|
);
|
|
if (resolved) {
|
|
const result = resolved.map((item) => {
|
|
if (item) {
|
|
const [resolvedFileName, extension] = item;
|
|
return {
|
|
resolvedFileName,
|
|
extension,
|
|
isExternalLibraryImport: false,
|
|
};
|
|
}
|
|
return undefined;
|
|
});
|
|
result.length = specifiers.length;
|
|
return result;
|
|
} else {
|
|
return new Array(specifiers.length);
|
|
}
|
|
},
|
|
createHash(data) {
|
|
return ops.op_create_hash(data);
|
|
},
|
|
|
|
// LanguageServiceHost
|
|
getCompilationSettings() {
|
|
if (logDebug) {
|
|
debug("host.getCompilationSettings()");
|
|
}
|
|
return (lastRequestScope
|
|
? languageServiceEntries.byScope.get(lastRequestScope)?.compilerOptions
|
|
: null) ?? languageServiceEntries.unscoped.compilerOptions;
|
|
},
|
|
getScriptFileNames() {
|
|
if (logDebug) {
|
|
debug("host.getScriptFileNames()");
|
|
}
|
|
if (!scriptNamesCache) {
|
|
const { unscoped, byScope } = ops.op_script_names();
|
|
scriptNamesCache = {
|
|
unscoped,
|
|
byScope: new Map(Object.entries(byScope)),
|
|
};
|
|
}
|
|
return (lastRequestScope
|
|
? scriptNamesCache.byScope.get(lastRequestScope)
|
|
: null) ?? scriptNamesCache.unscoped;
|
|
},
|
|
getScriptVersion(specifier) {
|
|
if (logDebug) {
|
|
debug(`host.getScriptVersion("${specifier}")`);
|
|
}
|
|
if (specifier.startsWith(ASSETS_URL_PREFIX)) {
|
|
return "1";
|
|
}
|
|
// tsc requests the script version multiple times even though it can't
|
|
// possibly have changed, so we will memoize it on a per request basis.
|
|
if (scriptVersionCache.has(specifier)) {
|
|
return scriptVersionCache.get(specifier);
|
|
}
|
|
const scriptVersion = ops.op_script_version(specifier);
|
|
scriptVersionCache.set(specifier, scriptVersion);
|
|
return scriptVersion;
|
|
},
|
|
getScriptSnapshot(specifier) {
|
|
if (logDebug) {
|
|
debug(`host.getScriptSnapshot("${specifier}")`);
|
|
}
|
|
if (specifier.startsWith(ASSETS_URL_PREFIX)) {
|
|
const sourceFile = this.getSourceFile(
|
|
specifier,
|
|
ts.ScriptTarget.ESNext,
|
|
);
|
|
if (sourceFile) {
|
|
if (!assetScopes.has(specifier)) {
|
|
assetScopes.set(specifier, lastRequestScope);
|
|
}
|
|
// This case only occurs for assets.
|
|
return ts.ScriptSnapshot.fromString(sourceFile.text);
|
|
}
|
|
}
|
|
let scriptSnapshot = scriptSnapshotCache.get(specifier);
|
|
if (scriptSnapshot == undefined) {
|
|
/** @type {{ data: string, version: string, isCjs: boolean }} */
|
|
const fileInfo = ops.op_load(specifier);
|
|
if (!fileInfo) {
|
|
return undefined;
|
|
}
|
|
scriptSnapshot = ts.ScriptSnapshot.fromString(fileInfo.data);
|
|
scriptSnapshot.isCjs = fileInfo.isCjs;
|
|
scriptSnapshotCache.set(specifier, scriptSnapshot);
|
|
scriptVersionCache.set(specifier, fileInfo.version);
|
|
}
|
|
return scriptSnapshot;
|
|
},
|
|
};
|
|
|
|
// @ts-ignore Undocumented function.
|
|
const moduleSpecifierCache = ts.server.createModuleSpecifierCache(host);
|
|
|
|
// @ts-ignore Undocumented function.
|
|
const exportMapCache = ts.createCacheableExportInfoMap(host);
|
|
|
|
// override the npm install @types package diagnostics to be deno specific
|
|
ts.setLocalizedDiagnosticMessages((() => {
|
|
const nodeMessage = "Cannot find name '{0}'."; // don't offer any suggestions
|
|
const jqueryMessage =
|
|
"Cannot find name '{0}'. Did you mean to import jQuery? Try adding `import $ from \"npm:jquery\";`.";
|
|
return {
|
|
"Cannot_find_name_0_Do_you_need_to_install_type_definitions_for_node_Try_npm_i_save_dev_types_Slashno_2580":
|
|
nodeMessage,
|
|
"Cannot_find_name_0_Do_you_need_to_install_type_definitions_for_node_Try_npm_i_save_dev_types_Slashno_2591":
|
|
nodeMessage,
|
|
"Cannot_find_name_0_Do_you_need_to_install_type_definitions_for_jQuery_Try_npm_i_save_dev_types_Slash_2581":
|
|
jqueryMessage,
|
|
"Cannot_find_name_0_Do_you_need_to_install_type_definitions_for_jQuery_Try_npm_i_save_dev_types_Slash_2592":
|
|
jqueryMessage,
|
|
"Module_0_was_resolved_to_1_but_allowArbitraryExtensions_is_not_set_6263":
|
|
"Module '{0}' was resolved to '{1}', but importing these modules is not supported.",
|
|
};
|
|
})());
|
|
|
|
/** @type {Array<[string, number]>} */
|
|
const stats = [];
|
|
let statsStart = 0;
|
|
|
|
function performanceStart() {
|
|
stats.length = 0;
|
|
statsStart = Date.now();
|
|
ts.performance.enable();
|
|
}
|
|
|
|
/**
|
|
* @param {{ program: ts.Program | ts.EmitAndSemanticDiagnosticsBuilderProgram, fileCount?: number }} options
|
|
*/
|
|
function performanceProgram({ program, fileCount }) {
|
|
if (program) {
|
|
if ("getProgram" in program) {
|
|
program = program.getProgram();
|
|
}
|
|
stats.push(["Files", program.getSourceFiles().length]);
|
|
stats.push(["Nodes", program.getNodeCount()]);
|
|
stats.push(["Identifiers", program.getIdentifierCount()]);
|
|
stats.push(["Symbols", program.getSymbolCount()]);
|
|
stats.push(["Types", program.getTypeCount()]);
|
|
stats.push(["Instantiations", program.getInstantiationCount()]);
|
|
} else if (fileCount != null) {
|
|
stats.push(["Files", 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(["Parse time", programTime]);
|
|
stats.push(["Bind time", bindTime]);
|
|
stats.push(["Check time", checkTime]);
|
|
stats.push(["Emit time", emitTime]);
|
|
stats.push(
|
|
["Total TS time", programTime + bindTime + checkTime + emitTime],
|
|
);
|
|
}
|
|
|
|
function performanceEnd() {
|
|
const duration = Date.now() - statsStart;
|
|
stats.push(["Compile time", duration]);
|
|
return stats;
|
|
}
|
|
|
|
/**
|
|
* @typedef {object} Request
|
|
* @property {Record<string, any>} config
|
|
* @property {boolean} debug
|
|
* @property {string[]} rootNames
|
|
* @property {boolean} localOnly
|
|
*/
|
|
|
|
/**
|
|
* Checks the normalized version of the root name and stores it in
|
|
* `normalizedToOriginalMap`. If the normalized specifier is already
|
|
* registered for the different root name, it throws an AssertionError.
|
|
*
|
|
* @param {string} rootName
|
|
*/
|
|
function checkNormalizedPath(rootName) {
|
|
const normalized = ts.normalizePath(rootName);
|
|
const originalRootName = normalizedToOriginalMap.get(normalized);
|
|
if (typeof originalRootName === "undefined") {
|
|
normalizedToOriginalMap.set(normalized, rootName);
|
|
} else if (originalRootName !== rootName) {
|
|
// The different root names are normalizd to the same path.
|
|
// This will cause problem when looking up the source for each.
|
|
throw new AssertionError(
|
|
`The different names for the same normalized specifier are specified: normalized=${normalized}, rootNames=${originalRootName},${rootName}`,
|
|
);
|
|
}
|
|
}
|
|
|
|
/** @param {Record<string, unknown>} config */
|
|
function normalizeConfig(config) {
|
|
// the typescript compiler doesn't know about the precompile
|
|
// transform at the moment, so just tell it we're using react-jsx
|
|
if (config.jsx === "precompile") {
|
|
config.jsx = "react-jsx";
|
|
}
|
|
if (config.jsxPrecompileSkipElements) {
|
|
delete config.jsxPrecompileSkipElements;
|
|
}
|
|
return config;
|
|
}
|
|
|
|
/** @param {Record<string, unknown>} config */
|
|
function lspTsConfigToCompilerOptions(config) {
|
|
const normalizedConfig = normalizeConfig(config);
|
|
const { options, errors } = ts
|
|
.convertCompilerOptionsFromJson(normalizedConfig, "");
|
|
Object.assign(options, {
|
|
allowNonTsExtensions: true,
|
|
allowImportingTsExtensions: true,
|
|
module: ts.ModuleKind.NodeNext,
|
|
moduleResolution: ts.ModuleResolutionKind.NodeNext,
|
|
});
|
|
if (errors.length > 0 && logDebug) {
|
|
debug(ts.formatDiagnostics(errors, host));
|
|
}
|
|
return options;
|
|
}
|
|
|
|
/** The API that is called by Rust when executing a request.
|
|
* @param {Request} request
|
|
*/
|
|
function exec({ config, debug: debugFlag, rootNames, localOnly }) {
|
|
setLogDebug(debugFlag, "TS");
|
|
performanceStart();
|
|
|
|
config = normalizeConfig(config);
|
|
|
|
if (logDebug) {
|
|
debug(">>> exec start", { rootNames });
|
|
debug(config);
|
|
}
|
|
|
|
rootNames.forEach(checkNormalizedPath);
|
|
|
|
const { options, errors: configFileParsingDiagnostics } = ts
|
|
.convertCompilerOptionsFromJson(config, "");
|
|
// The `allowNonTsExtensions` is a "hidden" compiler option used in VSCode
|
|
// which is not allowed to be passed in JSON, we need it to allow special
|
|
// URLs which Deno supports. So we need to either ignore the diagnostic, or
|
|
// inject it ourselves.
|
|
Object.assign(options, { allowNonTsExtensions: true });
|
|
const program = ts.createIncrementalProgram({
|
|
rootNames,
|
|
options,
|
|
host,
|
|
configFileParsingDiagnostics,
|
|
});
|
|
|
|
const checkFiles = localOnly
|
|
? rootNames
|
|
.filter((n) => !n.startsWith("http"))
|
|
.map((checkName) => {
|
|
const sourceFile = program.getSourceFile(checkName);
|
|
if (sourceFile == null) {
|
|
throw new Error("Could not find source file for: " + checkName);
|
|
}
|
|
return sourceFile;
|
|
})
|
|
: undefined;
|
|
|
|
if (checkFiles != null) {
|
|
// When calling program.getSemanticDiagnostics(...) with a source file, we
|
|
// need to call this code first in order to get it to invalidate cached
|
|
// diagnostics correctly. This is what program.getSemanticDiagnostics()
|
|
// does internally when calling without any arguments.
|
|
const checkFileNames = new Set(checkFiles.map((f) => f.fileName));
|
|
while (
|
|
program.getSemanticDiagnosticsOfNextAffectedFile(
|
|
undefined,
|
|
/* ignoreSourceFile */ (s) => !checkFileNames.has(s.fileName),
|
|
)
|
|
) {
|
|
// keep going until there are no more affected files
|
|
}
|
|
}
|
|
|
|
const diagnostics = [
|
|
...program.getConfigFileParsingDiagnostics(),
|
|
...(checkFiles == null
|
|
? program.getSyntacticDiagnostics()
|
|
: ts.sortAndDeduplicateDiagnostics(
|
|
checkFiles.map((s) => program.getSyntacticDiagnostics(s)).flat(),
|
|
)),
|
|
...program.getOptionsDiagnostics(),
|
|
...program.getGlobalDiagnostics(),
|
|
...(checkFiles == null
|
|
? program.getSemanticDiagnostics()
|
|
: ts.sortAndDeduplicateDiagnostics(
|
|
checkFiles.map((s) => program.getSemanticDiagnostics(s)).flat(),
|
|
)),
|
|
].filter(filterMapDiagnostic);
|
|
|
|
// emit the tsbuildinfo file
|
|
// @ts-ignore: emitBuildInfo is not exposed (https://github.com/microsoft/TypeScript/issues/49871)
|
|
program.emitBuildInfo(host.writeFile);
|
|
|
|
performanceProgram({ program });
|
|
|
|
ops.op_respond({
|
|
diagnostics: fromTypeScriptDiagnostics(diagnostics),
|
|
stats: performanceEnd(),
|
|
});
|
|
debug("<<< exec stop");
|
|
}
|
|
|
|
/** @param {ts.Diagnostic} diagnostic */
|
|
function filterMapDiagnostic(diagnostic) {
|
|
if (IGNORED_DIAGNOSTICS.includes(diagnostic.code)) {
|
|
return false;
|
|
}
|
|
// make the diagnostic for using an `export =` in an es module a warning
|
|
if (diagnostic.code === 1203) {
|
|
diagnostic.category = ts.DiagnosticCategory.Warning;
|
|
if (typeof diagnostic.messageText === "string") {
|
|
const message =
|
|
" This will start erroring in a future version of Deno 2 " +
|
|
"in order to align with TypeScript.";
|
|
// seems typescript shares objects, so check if it's already been set
|
|
if (!diagnostic.messageText.endsWith(message)) {
|
|
diagnostic.messageText += message;
|
|
}
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* @param {any} e
|
|
* @returns {e is (OperationCanceledError | ts.OperationCanceledException)}
|
|
*/
|
|
function isCancellationError(e) {
|
|
return e instanceof OperationCanceledError ||
|
|
e instanceof ts.OperationCanceledException;
|
|
}
|
|
|
|
function getAssets() {
|
|
/** @type {{ specifier: string; text: string; }[]} */
|
|
const assets = [];
|
|
for (const sourceFile of sourceFileCache.values()) {
|
|
if (sourceFile.fileName.startsWith(ASSETS_URL_PREFIX)) {
|
|
assets.push({
|
|
specifier: sourceFile.fileName,
|
|
text: sourceFile.text,
|
|
});
|
|
}
|
|
}
|
|
return assets;
|
|
}
|
|
|
|
/**
|
|
* @param {number} _id
|
|
* @param {any} data
|
|
* @param {string | null} error
|
|
*/
|
|
// TODO(bartlomieju): this feels needlessly generic, both type checking
|
|
// and language server use it with inefficient serialization. Id is not used
|
|
// anyway...
|
|
function respond(_id, data = null, error = null) {
|
|
if (error) {
|
|
ops.op_respond(
|
|
"error",
|
|
error,
|
|
);
|
|
} else {
|
|
ops.op_respond(JSON.stringify(data), "");
|
|
}
|
|
}
|
|
|
|
/** @typedef {[[string, number][], number, [string, any][]] } PendingChange */
|
|
/**
|
|
* @template T
|
|
* @typedef {T | null} Option<T> */
|
|
|
|
/** @returns {Promise<[number, string, any[], string | null, Option<PendingChange>] | null>} */
|
|
async function pollRequests() {
|
|
return await ops.op_poll_requests();
|
|
}
|
|
|
|
let hasStarted = false;
|
|
|
|
/** @param {boolean} enableDebugLogging */
|
|
async function serverMainLoop(enableDebugLogging) {
|
|
if (hasStarted) {
|
|
throw new Error("The language server has already been initialized.");
|
|
}
|
|
hasStarted = true;
|
|
languageServiceEntries.unscoped = {
|
|
ls: ts.createLanguageService(
|
|
host,
|
|
documentRegistry,
|
|
),
|
|
compilerOptions: lspTsConfigToCompilerOptions({
|
|
"allowJs": true,
|
|
"esModuleInterop": true,
|
|
"experimentalDecorators": false,
|
|
"isolatedModules": true,
|
|
"lib": ["deno.ns", "deno.window", "deno.unstable"],
|
|
"module": "NodeNext",
|
|
"moduleResolution": "NodeNext",
|
|
"moduleDetection": "force",
|
|
"noEmit": true,
|
|
"noImplicitOverride": true,
|
|
"resolveJsonModule": true,
|
|
"strict": true,
|
|
"target": "esnext",
|
|
"useDefineForClassFields": true,
|
|
"jsx": "react",
|
|
"jsxFactory": "React.createElement",
|
|
"jsxFragmentFactory": "React.Fragment",
|
|
}),
|
|
};
|
|
setLogDebug(enableDebugLogging, "TSLS");
|
|
debug("serverInit()");
|
|
|
|
while (true) {
|
|
const request = await pollRequests();
|
|
if (request === null) {
|
|
break;
|
|
}
|
|
try {
|
|
serverRequest(
|
|
request[0],
|
|
request[1],
|
|
request[2],
|
|
request[3],
|
|
request[4],
|
|
);
|
|
} catch (err) {
|
|
error(`Internal error occurred processing request: ${err}`);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param {any} error
|
|
* @param {any[] | null} args
|
|
*/
|
|
function formatErrorWithArgs(error, args) {
|
|
let errorString = "stack" in error
|
|
? error.stack.toString()
|
|
: error.toString();
|
|
if (args) {
|
|
errorString += `\nFor request: [${
|
|
args.map((v) => JSON.stringify(v)).join(", ")
|
|
}]`;
|
|
}
|
|
return errorString;
|
|
}
|
|
|
|
/**
|
|
* @param {number} id
|
|
* @param {string} method
|
|
* @param {any[]} args
|
|
* @param {string | null} scope
|
|
* @param {PendingChange | null} maybeChange
|
|
*/
|
|
function serverRequest(id, method, args, scope, maybeChange) {
|
|
if (logDebug) {
|
|
debug(`serverRequest()`, id, method, args, scope, maybeChange);
|
|
}
|
|
if (maybeChange !== null) {
|
|
const changedScripts = maybeChange[0];
|
|
const newProjectVersion = maybeChange[1];
|
|
const newConfigsByScope = maybeChange[2];
|
|
if (newConfigsByScope) {
|
|
isNodeSourceFileCache.clear();
|
|
assetScopes.clear();
|
|
/** @type { typeof languageServiceEntries.byScope } */
|
|
const newByScope = new Map();
|
|
for (const [scope, config] of newConfigsByScope) {
|
|
lastRequestScope = scope;
|
|
const oldEntry = languageServiceEntries.byScope.get(scope);
|
|
const ls = oldEntry
|
|
? oldEntry.ls
|
|
: ts.createLanguageService(host, documentRegistry);
|
|
const compilerOptions = lspTsConfigToCompilerOptions(config);
|
|
newByScope.set(scope, { ls, compilerOptions });
|
|
languageServiceEntries.byScope.delete(scope);
|
|
}
|
|
for (const oldEntry of languageServiceEntries.byScope.values()) {
|
|
oldEntry.ls.dispose();
|
|
}
|
|
languageServiceEntries.byScope = newByScope;
|
|
}
|
|
|
|
projectVersionCache = newProjectVersion;
|
|
|
|
let opened = false;
|
|
let closed = false;
|
|
for (const { 0: script, 1: changeKind } of changedScripts) {
|
|
if (changeKind === ChangeKind.Opened) {
|
|
opened = true;
|
|
} else if (changeKind === ChangeKind.Closed) {
|
|
closed = true;
|
|
}
|
|
scriptVersionCache.delete(script);
|
|
scriptSnapshotCache.delete(script);
|
|
}
|
|
|
|
if (newConfigsByScope || opened || closed) {
|
|
scriptNamesCache = null;
|
|
}
|
|
}
|
|
|
|
// For requests pertaining to an asset document, we make it so that the
|
|
// passed scope is just its own specifier. We map it to an actual scope here
|
|
// based on the first scope that the asset was loaded into.
|
|
if (scope?.startsWith(ASSETS_URL_PREFIX)) {
|
|
scope = assetScopes.get(scope) ?? null;
|
|
}
|
|
lastRequestMethod = method;
|
|
lastRequestScope = scope;
|
|
const ls = (scope ? languageServiceEntries.byScope.get(scope)?.ls : null) ??
|
|
languageServiceEntries.unscoped.ls;
|
|
switch (method) {
|
|
case "$getSupportedCodeFixes": {
|
|
return respond(
|
|
id,
|
|
ts.getSupportedCodeFixes(),
|
|
);
|
|
}
|
|
case "$getAssets": {
|
|
return respond(id, getAssets());
|
|
}
|
|
case "$getDiagnostics": {
|
|
const projectVersion = args[1];
|
|
// there's a possibility that we receive a change notification
|
|
// but the diagnostic server queues a `$getDiagnostics` request
|
|
// with a stale project version. in that case, treat it as cancelled
|
|
// (it's about to be invalidated anyway).
|
|
if (projectVersionCache && projectVersion !== projectVersionCache) {
|
|
return respond(id, {});
|
|
}
|
|
try {
|
|
/** @type {Record<string, any[]>} */
|
|
const diagnosticMap = {};
|
|
for (const specifier of args[0]) {
|
|
diagnosticMap[specifier] = fromTypeScriptDiagnostics([
|
|
...ls.getSemanticDiagnostics(specifier),
|
|
...ls.getSuggestionDiagnostics(specifier),
|
|
...ls.getSyntacticDiagnostics(specifier),
|
|
].filter(filterMapDiagnostic));
|
|
}
|
|
return respond(id, diagnosticMap);
|
|
} catch (e) {
|
|
if (
|
|
!isCancellationError(e)
|
|
) {
|
|
return respond(
|
|
id,
|
|
{},
|
|
formatErrorWithArgs(e, [id, method, args, scope, maybeChange]),
|
|
);
|
|
}
|
|
return respond(id, {});
|
|
}
|
|
}
|
|
default:
|
|
if (typeof ls[method] === "function") {
|
|
// The `getCompletionEntryDetails()` method returns null if the
|
|
// `source` is `null` for whatever reason. It must be `undefined`.
|
|
if (method == "getCompletionEntryDetails") {
|
|
args[4] ??= undefined;
|
|
}
|
|
try {
|
|
return respond(id, ls[method](...args));
|
|
} catch (e) {
|
|
if (!isCancellationError(e)) {
|
|
return respond(
|
|
id,
|
|
null,
|
|
formatErrorWithArgs(e, [id, method, args, scope, maybeChange]),
|
|
);
|
|
}
|
|
return respond(id);
|
|
}
|
|
}
|
|
throw new TypeError(
|
|
// @ts-ignore exhausted case statement sets type to never
|
|
`Invalid request method for request: "${method}" (${id})`,
|
|
);
|
|
}
|
|
}
|
|
|
|
// A build time only op that provides some setup information that is used to
|
|
// ensure the snapshot is setup properly.
|
|
/** @type {{ buildSpecifier: string; libs: string[]; nodeBuiltInModuleNames: string[] }} */
|
|
const { buildSpecifier, libs } = ops.op_build_info();
|
|
|
|
// list of globals that should be kept in Node's globalThis
|
|
ts.deno.setNodeOnlyGlobalNames([
|
|
"__dirname",
|
|
"__filename",
|
|
"Buffer",
|
|
"BufferConstructor",
|
|
"BufferEncoding",
|
|
"clearImmediate",
|
|
"clearInterval",
|
|
"clearTimeout",
|
|
"console",
|
|
"Console",
|
|
"ErrorConstructor",
|
|
"gc",
|
|
"Global",
|
|
"ImportMeta",
|
|
"localStorage",
|
|
"queueMicrotask",
|
|
"RequestInit",
|
|
"ResponseInit",
|
|
"sessionStorage",
|
|
"setImmediate",
|
|
"setInterval",
|
|
"setTimeout",
|
|
]);
|
|
|
|
for (const lib of libs) {
|
|
const specifier = `lib.${lib}.d.ts`;
|
|
// we are using internal APIs here to "inject" our custom libraries into
|
|
// tsc, so things like `"lib": [ "deno.ns" ]` are supported.
|
|
if (!ts.libs.includes(lib)) {
|
|
ts.libs.push(lib);
|
|
ts.libMap.set(lib, `lib.${lib}.d.ts`);
|
|
}
|
|
// we are caching in memory common type libraries that will be re-used by
|
|
// tsc on when the snapshot is restored
|
|
assert(
|
|
!!host.getSourceFile(
|
|
`${ASSETS_URL_PREFIX}${specifier}`,
|
|
ts.ScriptTarget.ESNext,
|
|
),
|
|
`failed to load '${ASSETS_URL_PREFIX}${specifier}'`,
|
|
);
|
|
}
|
|
// this helps ensure as much as possible is in memory that is re-usable
|
|
// before the snapshotting is done, which helps unsure fast "startup" for
|
|
// subsequent uses of tsc in Deno.
|
|
const TS_SNAPSHOT_PROGRAM = ts.createProgram({
|
|
rootNames: [buildSpecifier],
|
|
options: SNAPSHOT_COMPILE_OPTIONS,
|
|
host,
|
|
});
|
|
assert(
|
|
ts.getPreEmitDiagnostics(TS_SNAPSHOT_PROGRAM).length === 0,
|
|
"lib.d.ts files have errors",
|
|
);
|
|
|
|
// remove this now that we don't need it anymore for warming up tsc
|
|
sourceFileCache.delete(buildSpecifier);
|
|
|
|
// exposes the functions that are called by `tsc::exec()` when type
|
|
// checking TypeScript.
|
|
/** @type {any} */
|
|
const global = globalThis;
|
|
global.exec = exec;
|
|
global.getAssets = getAssets;
|
|
|
|
// exposes the functions that are called when the compiler is used as a
|
|
// language service.
|
|
global.serverMainLoop = serverMainLoop;
|
|
})(this);
|