mirror of
https://github.com/denoland/deno.git
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771 lines
23 KiB
JavaScript
771 lines
23 KiB
JavaScript
// Copyright 2018-2021 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. This intentionally makes
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// Deno non compliant with ECMA-262 Annex B.2.2.1
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delete Object.prototype.__proto__;
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((window) => {
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/** @type {DenoCore} */
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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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// 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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const normalizedToOriginalMap = new Map();
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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 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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// adding a non-zero integer value to the end of the debug string causes
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// the message to be printed to stderr instead of stdout, which is better
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// aligned to the behaviour of debug messages
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core.print(`DEBUG ${logSource} - ${stringifiedArgs}\n`, 1);
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}
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}
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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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core.print(`ERROR ${logSource} = ${stringifiedArgs}\n`, 1);
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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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/** @type {Map<string, ts.SourceFile>} */
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const sourceFileCache = new Map();
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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 = 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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/** @param {ts.Diagnostic[]} diagnostics */
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function fromTypeScriptDiagnostic(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 = "asset:///";
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const CACHE = "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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// TS1208: All files must be modules when the '--isolatedModules' flag is
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// provided. We can ignore because we guarantee that all files are
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// modules.
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1208,
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// TS1375: 'await' expressions are only allowed at the top level of a file
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// when that file is a module, but this file has no imports or exports.
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// Consider adding an empty 'export {}' to make this file a module.
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1375,
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// TS1103: 'for-await-of' statement is only allowed within an async function
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// or async generator.
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1103,
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// TS2306: File 'file:///Users/rld/src/deno/cli/tests/subdir/amd_like.js' is
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// not a module.
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2306,
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// TS2691: An import path cannot end with a '.ts' extension. Consider
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// importing 'bad-module' instead.
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2691,
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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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// 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/cli/tests/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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};
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class ScriptSnapshot {
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/** @type {string} */
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specifier;
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/** @type {string} */
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version;
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/**
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* @param {string} specifier
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* @param {string} version
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*/
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constructor(specifier, version) {
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this.specifier = specifier;
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this.version = version;
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}
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/**
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* @param {number} start
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* @param {number} end
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* @returns {string}
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*/
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getText(start, end) {
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const { specifier, version } = this;
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debug(
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`snapshot.getText(${start}, ${end}) specifier: ${specifier} version: ${version}`,
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);
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return core.jsonOpSync("op_get_text", { specifier, version, start, end });
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}
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/**
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* @returns {number}
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*/
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getLength() {
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const { specifier, version } = this;
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debug(`snapshot.getLength() specifier: ${specifier} version: ${version}`);
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return core.jsonOpSync("op_get_length", { specifier, version });
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}
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/**
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* @param {ScriptSnapshot} oldSnapshot
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* @returns {ts.TextChangeRange | undefined}
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*/
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getChangeRange(oldSnapshot) {
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const { specifier, version } = this;
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const { version: oldVersion } = oldSnapshot;
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const oldLength = oldSnapshot.getLength();
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debug(
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`snapshot.getLength() specifier: ${specifier} oldVersion: ${oldVersion} version: ${version}`,
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);
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return core.jsonOpSync(
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"op_get_change_range",
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{ specifier, oldLength, oldVersion, version },
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);
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}
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dispose() {
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const { specifier, version } = this;
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debug(`snapshot.dispose() specifier: ${specifier} version: ${version}`);
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core.jsonOpSync("op_dispose", { specifier, version });
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}
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}
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/** @type {ts.CompilerOptions} */
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let compilationSettings = {};
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/** @type {ts.LanguageService} */
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let languageService;
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/** An object literal of the incremental compiler host, which provides the
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* specific "bindings" to the Deno environment that tsc needs to work.
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*
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* @type {ts.CompilerHost & ts.LanguageServiceHost} */
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const host = {
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fileExists(fileName) {
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debug(`host.fileExists("${fileName}")`);
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return false;
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},
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readFile(specifier) {
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debug(`host.readFile("${specifier}")`);
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return core.jsonOpSync("op_load", { specifier }).data;
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},
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getSourceFile(
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specifier,
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languageVersion,
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_onError,
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_shouldCreateNewSourceFile,
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) {
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debug(
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`host.getSourceFile("${specifier}", ${
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ts.ScriptTarget[languageVersion]
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})`,
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);
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let sourceFile = sourceFileCache.get(specifier);
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if (sourceFile) {
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return sourceFile;
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}
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// Needs the original specifier
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specifier = normalizedToOriginalMap.get(specifier) ?? specifier;
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/** @type {{ data: string; hash?: string; scriptKind: ts.ScriptKind }} */
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const { data, hash, scriptKind } = core.jsonOpSync(
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"op_load",
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{ specifier },
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);
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assert(
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data != null,
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`"data" is unexpectedly null for "${specifier}".`,
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);
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sourceFile = ts.createSourceFile(
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specifier,
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data,
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languageVersion,
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false,
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scriptKind,
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);
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sourceFile.moduleName = specifier;
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sourceFile.version = hash;
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sourceFileCache.set(specifier, sourceFile);
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return sourceFile;
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},
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getDefaultLibFileName() {
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return `${ASSETS}/lib.esnext.d.ts`;
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},
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getDefaultLibLocation() {
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return ASSETS;
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},
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writeFile(fileName, data, _writeByteOrderMark, _onError, sourceFiles) {
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debug(`host.writeFile("${fileName}")`);
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let maybeSpecifiers;
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if (sourceFiles) {
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maybeSpecifiers = sourceFiles.map((sf) => sf.moduleName);
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}
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return core.jsonOpSync(
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"op_emit",
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{ maybeSpecifiers, fileName, data },
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);
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},
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getCurrentDirectory() {
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return CACHE;
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},
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getCanonicalFileName(fileName) {
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return fileName;
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},
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useCaseSensitiveFileNames() {
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return true;
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},
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getNewLine() {
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return "\n";
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},
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resolveModuleNames(specifiers, base) {
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debug(`host.resolveModuleNames()`);
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debug(` base: ${base}`);
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debug(` specifiers: ${specifiers.join(", ")}`);
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/** @type {Array<[string, ts.Extension] | undefined>} */
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const resolved = core.jsonOpSync("op_resolve", {
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specifiers,
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base,
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});
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if (resolved) {
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const result = resolved.map((item) => {
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if (item) {
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const [resolvedFileName, extension] = item;
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return {
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resolvedFileName,
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extension,
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isExternalLibraryImport: false,
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};
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}
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return undefined;
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});
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result.length = specifiers.length;
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return result;
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} else {
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return new Array(specifiers.length);
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}
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},
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createHash(data) {
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return core.jsonOpSync("op_create_hash", { data }).hash;
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},
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// LanguageServiceHost
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getCompilationSettings() {
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debug("host.getCompilationSettings()");
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return compilationSettings;
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},
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getScriptFileNames() {
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debug("host.getScriptFileNames()");
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return core.jsonOpSync("op_script_names", undefined);
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},
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getScriptVersion(specifier) {
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debug(`host.getScriptVersion("${specifier}")`);
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const sourceFile = sourceFileCache.get(specifier);
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if (sourceFile) {
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return sourceFile.version ?? "1";
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}
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return core.jsonOpSync("op_script_version", { specifier });
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},
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getScriptSnapshot(specifier) {
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debug(`host.getScriptSnapshot("${specifier}")`);
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const sourceFile = sourceFileCache.get(specifier);
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if (sourceFile) {
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return {
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getText(start, end) {
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return sourceFile.text.substring(start, end);
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},
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getLength() {
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return sourceFile.text.length;
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},
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getChangeRange() {
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return undefined;
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},
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};
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}
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/** @type {string | undefined} */
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const version = core.jsonOpSync("op_script_version", { specifier });
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if (version != null) {
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return new ScriptSnapshot(specifier, version);
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}
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return undefined;
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},
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};
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/** @type {Array<[string, number]>} */
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const stats = [];
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let statsStart = 0;
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function performanceStart() {
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stats.length = 0;
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statsStart = Date.now();
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ts.performance.enable();
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}
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/**
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* @param {{ program: ts.Program | ts.EmitAndSemanticDiagnosticsBuilderProgram, fileCount?: number }} options
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*/
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function performanceProgram({ program, fileCount }) {
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if (program) {
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if ("getProgram" in program) {
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program = program.getProgram();
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}
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stats.push(["Files", program.getSourceFiles().length]);
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stats.push(["Nodes", program.getNodeCount()]);
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stats.push(["Identifiers", program.getIdentifierCount()]);
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stats.push(["Symbols", program.getSymbolCount()]);
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stats.push(["Types", program.getTypeCount()]);
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stats.push(["Instantiations", program.getInstantiationCount()]);
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} else if (fileCount != null) {
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stats.push(["Files", fileCount]);
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}
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const programTime = ts.performance.getDuration("Program");
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const bindTime = ts.performance.getDuration("Bind");
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const checkTime = ts.performance.getDuration("Check");
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const emitTime = ts.performance.getDuration("Emit");
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stats.push(["Parse time", programTime]);
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stats.push(["Bind time", bindTime]);
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stats.push(["Check time", checkTime]);
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stats.push(["Emit time", emitTime]);
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stats.push(
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["Total TS time", programTime + bindTime + checkTime + emitTime],
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);
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}
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function performanceEnd() {
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const duration = Date.now() - statsStart;
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stats.push(["Compile time", duration]);
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return stats;
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}
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/**
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* @typedef {object} Request
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* @property {Record<string, any>} config
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* @property {boolean} debug
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* @property {string[]} rootNames
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*/
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/**
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* Checks the normalized version of the root name and stores it in
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* `normalizedToOriginalMap`. If the normalized specifier is already
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* registered for the different root name, it throws an AssertionError.
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*
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* @param {string} rootName
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*/
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function checkNormalizedPath(rootName) {
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const normalized = ts.normalizePath(rootName);
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const originalRootName = normalizedToOriginalMap.get(normalized);
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if (typeof originalRootName === "undefined") {
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normalizedToOriginalMap.set(normalized, rootName);
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} else if (originalRootName !== rootName) {
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// The different root names are normalizd to the same path.
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// This will cause problem when looking up the source for each.
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throw new AssertionError(
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`The different names for the same normalized specifier are specified: normalized=${normalized}, rootNames=${originalRootName},${rootName}`,
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);
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}
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}
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/** The API that is called by Rust when executing a request.
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* @param {Request} request
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*/
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function exec({ config, debug: debugFlag, rootNames }) {
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setLogDebug(debugFlag, "TS");
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performanceStart();
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debug(">>> exec start", { rootNames });
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debug(config);
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rootNames.forEach(checkNormalizedPath);
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const { options, errors: configFileParsingDiagnostics } = ts
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.convertCompilerOptionsFromJson(config, "");
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// The `allowNonTsExtensions` is a "hidden" compiler option used in VSCode
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// which is not allowed to be passed in JSON, we need it to allow special
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// URLs which Deno supports. So we need to either ignore the diagnostic, or
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// inject it ourselves.
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Object.assign(options, { allowNonTsExtensions: true });
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const program = ts.createIncrementalProgram({
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rootNames,
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options,
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host,
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configFileParsingDiagnostics,
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});
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const { diagnostics: emitDiagnostics } = program.emit();
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const diagnostics = [
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...program.getConfigFileParsingDiagnostics(),
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...program.getSyntacticDiagnostics(),
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...program.getOptionsDiagnostics(),
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...program.getGlobalDiagnostics(),
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...program.getSemanticDiagnostics(),
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...emitDiagnostics,
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].filter(({ code }) => !IGNORED_DIAGNOSTICS.includes(code));
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performanceProgram({ program });
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core.jsonOpSync("op_respond", {
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diagnostics: fromTypeScriptDiagnostic(diagnostics),
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stats: performanceEnd(),
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});
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debug("<<< exec stop");
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}
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/**
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* @param {number} id
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* @param {any} data
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*/
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function respond(id, data = null) {
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core.jsonOpSync("op_respond", { id, data });
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}
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/**
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* @param {LanguageServerRequest} request
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*/
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function serverRequest({ id, ...request }) {
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debug(`serverRequest()`, { id, ...request });
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switch (request.method) {
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case "configure": {
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const { options, errors } = ts
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.convertCompilerOptionsFromJson(request.compilerOptions, "");
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Object.assign(options, { allowNonTsExtensions: true });
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if (errors.length) {
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debug(ts.formatDiagnostics(errors, host));
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}
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compilationSettings = options;
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return respond(id, true);
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}
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case "findRenameLocations": {
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return respond(
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id,
|
|
languageService.findRenameLocations(
|
|
request.specifier,
|
|
request.position,
|
|
request.findInStrings,
|
|
request.findInComments,
|
|
request.providePrefixAndSuffixTextForRename,
|
|
),
|
|
);
|
|
}
|
|
case "getAsset": {
|
|
const sourceFile = host.getSourceFile(
|
|
request.specifier,
|
|
ts.ScriptTarget.ESNext,
|
|
);
|
|
return respond(id, sourceFile && sourceFile.text);
|
|
}
|
|
case "getCodeFixes": {
|
|
return respond(
|
|
id,
|
|
languageService.getCodeFixesAtPosition(
|
|
request.specifier,
|
|
request.startPosition,
|
|
request.endPosition,
|
|
request.errorCodes.map((v) => Number(v)),
|
|
{
|
|
indentSize: 2,
|
|
indentStyle: ts.IndentStyle.Block,
|
|
semicolons: ts.SemicolonPreference.Insert,
|
|
},
|
|
{
|
|
quotePreference: "double",
|
|
},
|
|
),
|
|
);
|
|
}
|
|
case "getCombinedCodeFix": {
|
|
return respond(
|
|
id,
|
|
languageService.getCombinedCodeFix(
|
|
{
|
|
type: "file",
|
|
fileName: request.specifier,
|
|
},
|
|
request.fixId,
|
|
{
|
|
indentSize: 2,
|
|
indentStyle: ts.IndentStyle.Block,
|
|
semicolons: ts.SemicolonPreference.Insert,
|
|
},
|
|
{
|
|
quotePreference: "double",
|
|
},
|
|
),
|
|
);
|
|
}
|
|
case "getCompletions": {
|
|
return respond(
|
|
id,
|
|
languageService.getCompletionsAtPosition(
|
|
request.specifier,
|
|
request.position,
|
|
request.preferences,
|
|
),
|
|
);
|
|
}
|
|
case "getDefinition": {
|
|
return respond(
|
|
id,
|
|
languageService.getDefinitionAndBoundSpan(
|
|
request.specifier,
|
|
request.position,
|
|
),
|
|
);
|
|
}
|
|
case "getDiagnostics": {
|
|
try {
|
|
/** @type {Record<string, any[]>} */
|
|
const diagnosticMap = {};
|
|
for (const specifier of request.specifiers) {
|
|
diagnosticMap[specifier] = fromTypeScriptDiagnostic([
|
|
...languageService.getSemanticDiagnostics(specifier),
|
|
...languageService.getSuggestionDiagnostics(specifier),
|
|
...languageService.getSyntacticDiagnostics(specifier),
|
|
].filter(({ code }) => !IGNORED_DIAGNOSTICS.includes(code)));
|
|
}
|
|
return respond(id, diagnosticMap);
|
|
} catch (e) {
|
|
if ("stack" in e) {
|
|
error(e.stack);
|
|
} else {
|
|
error(e);
|
|
}
|
|
return respond(id, {});
|
|
}
|
|
}
|
|
case "getDocumentHighlights": {
|
|
return respond(
|
|
id,
|
|
languageService.getDocumentHighlights(
|
|
request.specifier,
|
|
request.position,
|
|
request.filesToSearch,
|
|
),
|
|
);
|
|
}
|
|
case "getImplementation": {
|
|
return respond(
|
|
id,
|
|
languageService.getImplementationAtPosition(
|
|
request.specifier,
|
|
request.position,
|
|
),
|
|
);
|
|
}
|
|
case "getNavigationTree": {
|
|
return respond(
|
|
id,
|
|
languageService.getNavigationTree(request.specifier),
|
|
);
|
|
}
|
|
case "getQuickInfo": {
|
|
return respond(
|
|
id,
|
|
languageService.getQuickInfoAtPosition(
|
|
request.specifier,
|
|
request.position,
|
|
),
|
|
);
|
|
}
|
|
case "getReferences": {
|
|
return respond(
|
|
id,
|
|
languageService.getReferencesAtPosition(
|
|
request.specifier,
|
|
request.position,
|
|
),
|
|
);
|
|
}
|
|
case "getSignatureHelpItems": {
|
|
return respond(
|
|
id,
|
|
languageService.getSignatureHelpItems(
|
|
request.specifier,
|
|
request.position,
|
|
request.options,
|
|
),
|
|
);
|
|
}
|
|
case "getSupportedCodeFixes": {
|
|
return respond(
|
|
id,
|
|
ts.getSupportedCodeFixes(),
|
|
);
|
|
}
|
|
default:
|
|
throw new TypeError(
|
|
// @ts-ignore exhausted case statement sets type to never
|
|
`Invalid request method for request: "${request.method}" (${id})`,
|
|
);
|
|
}
|
|
}
|
|
|
|
/** @param {{ debug: boolean; }} init */
|
|
function serverInit({ debug: debugFlag }) {
|
|
if (hasStarted) {
|
|
throw new Error("The language server has already been initialized.");
|
|
}
|
|
hasStarted = true;
|
|
languageService = ts.createLanguageService(host);
|
|
core.ops();
|
|
setLogDebug(debugFlag, "TSLS");
|
|
debug("serverInit()");
|
|
}
|
|
|
|
let hasStarted = false;
|
|
|
|
/** Startup the runtime environment, setting various flags.
|
|
* @param {{ debugFlag?: boolean; legacyFlag?: boolean; }} msg
|
|
*/
|
|
function startup({ debugFlag = false }) {
|
|
if (hasStarted) {
|
|
throw new Error("The compiler runtime already started.");
|
|
}
|
|
hasStarted = true;
|
|
core.ops();
|
|
setLogDebug(!!debugFlag, "TS");
|
|
}
|
|
|
|
// Setup the compiler runtime during the build process.
|
|
core.ops();
|
|
core.registerErrorClass("Error", Error);
|
|
|
|
// 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[] }} */
|
|
const { buildSpecifier, libs } = core.jsonOpSync("op_build_info", {});
|
|
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(`${ASSETS}${specifier}`, ts.ScriptTarget.ESNext),
|
|
);
|
|
}
|
|
// 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,
|
|
});
|
|
ts.getPreEmitDiagnostics(TS_SNAPSHOT_PROGRAM);
|
|
|
|
// exposes the two functions that are called by `tsc::exec()` when type
|
|
// checking TypeScript.
|
|
globalThis.startup = startup;
|
|
globalThis.exec = exec;
|
|
|
|
// exposes the functions that are called when the compiler is used as a
|
|
// language service.
|
|
globalThis.serverInit = serverInit;
|
|
globalThis.serverRequest = serverRequest;
|
|
})(this);
|