mirror of
https://github.com/denoland/deno.git
synced 2024-11-01 09:24:20 -04:00
506 lines
15 KiB
TypeScript
506 lines
15 KiB
TypeScript
// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
|
|
import * as msg from "gen/cli/msg_generated";
|
|
import * as ts from "typescript";
|
|
|
|
import { assetSourceCode } from "./assets";
|
|
import { bold, cyan, yellow } from "./colors";
|
|
import { Console } from "./console";
|
|
import { core } from "./core";
|
|
import { Diagnostic, fromTypeScriptDiagnostic } from "./diagnostics";
|
|
import { cwd } from "./dir";
|
|
import { sendSync } from "./dispatch";
|
|
import * as flatbuffers from "./flatbuffers";
|
|
import * as os from "./os";
|
|
import { TextDecoder, TextEncoder } from "./text_encoding";
|
|
import { assert, notImplemented } from "./util";
|
|
import * as util from "./util";
|
|
import { window } from "./window";
|
|
import { postMessage, workerClose, workerMain } from "./workers";
|
|
import { writeFileSync } from "./write_file";
|
|
|
|
// Startup boilerplate. This is necessary because the compiler has its own
|
|
// snapshot. (It would be great if we could remove these things or centralize
|
|
// them somewhere else.)
|
|
const console = new Console(core.print);
|
|
window.console = console;
|
|
window.workerMain = workerMain;
|
|
export default function denoMain(): void {
|
|
os.start("TS");
|
|
}
|
|
|
|
const ASSETS = "$asset$";
|
|
const OUT_DIR = "$deno$";
|
|
|
|
/** The format of the work message payload coming from the privileged side */
|
|
interface CompilerReq {
|
|
rootNames: string[];
|
|
bundle?: string;
|
|
// TODO(ry) add compiler config to this interface.
|
|
// options: ts.CompilerOptions;
|
|
configPath?: string;
|
|
config?: string;
|
|
}
|
|
|
|
interface ConfigureResponse {
|
|
ignoredOptions?: string[];
|
|
diagnostics?: ts.Diagnostic[];
|
|
}
|
|
|
|
/** Options that either do nothing in Deno, or would cause undesired behavior
|
|
* if modified. */
|
|
const ignoredCompilerOptions: ReadonlyArray<string> = [
|
|
"allowSyntheticDefaultImports",
|
|
"baseUrl",
|
|
"build",
|
|
"composite",
|
|
"declaration",
|
|
"declarationDir",
|
|
"declarationMap",
|
|
"diagnostics",
|
|
"downlevelIteration",
|
|
"emitBOM",
|
|
"emitDeclarationOnly",
|
|
"esModuleInterop",
|
|
"extendedDiagnostics",
|
|
"forceConsistentCasingInFileNames",
|
|
"help",
|
|
"importHelpers",
|
|
"incremental",
|
|
"inlineSourceMap",
|
|
"inlineSources",
|
|
"init",
|
|
"isolatedModules",
|
|
"lib",
|
|
"listEmittedFiles",
|
|
"listFiles",
|
|
"mapRoot",
|
|
"maxNodeModuleJsDepth",
|
|
"module",
|
|
"moduleResolution",
|
|
"newLine",
|
|
"noEmit",
|
|
"noEmitHelpers",
|
|
"noEmitOnError",
|
|
"noLib",
|
|
"noResolve",
|
|
"out",
|
|
"outDir",
|
|
"outFile",
|
|
"paths",
|
|
"preserveSymlinks",
|
|
"preserveWatchOutput",
|
|
"pretty",
|
|
"rootDir",
|
|
"rootDirs",
|
|
"showConfig",
|
|
"skipDefaultLibCheck",
|
|
"skipLibCheck",
|
|
"sourceMap",
|
|
"sourceRoot",
|
|
"stripInternal",
|
|
"target",
|
|
"traceResolution",
|
|
"tsBuildInfoFile",
|
|
"types",
|
|
"typeRoots",
|
|
"version",
|
|
"watch"
|
|
];
|
|
|
|
interface ModuleMetaData {
|
|
moduleName: string | undefined;
|
|
filename: string | undefined;
|
|
mediaType: msg.MediaType;
|
|
sourceCode: string | undefined;
|
|
}
|
|
|
|
interface EmitResult {
|
|
emitSkipped: boolean;
|
|
diagnostics?: Diagnostic;
|
|
}
|
|
|
|
/** Ops to Rust to resolve and fetch a modules meta data. */
|
|
function fetchModuleMetaData(
|
|
specifier: string,
|
|
referrer: string
|
|
): ModuleMetaData {
|
|
util.log("compiler.fetchModuleMetaData", { specifier, referrer });
|
|
// Send FetchModuleMetaData message
|
|
const builder = flatbuffers.createBuilder();
|
|
const specifier_ = builder.createString(specifier);
|
|
const referrer_ = builder.createString(referrer);
|
|
const inner = msg.FetchModuleMetaData.createFetchModuleMetaData(
|
|
builder,
|
|
specifier_,
|
|
referrer_
|
|
);
|
|
const baseRes = sendSync(builder, msg.Any.FetchModuleMetaData, inner);
|
|
assert(baseRes != null);
|
|
assert(
|
|
msg.Any.FetchModuleMetaDataRes === baseRes!.innerType(),
|
|
`base.innerType() unexpectedly is ${baseRes!.innerType()}`
|
|
);
|
|
const fetchModuleMetaDataRes = new msg.FetchModuleMetaDataRes();
|
|
assert(baseRes!.inner(fetchModuleMetaDataRes) != null);
|
|
const dataArray = fetchModuleMetaDataRes.dataArray();
|
|
const decoder = new TextDecoder();
|
|
const sourceCode = dataArray ? decoder.decode(dataArray) : undefined;
|
|
// flatbuffers returns `null` for an empty value, this does not fit well with
|
|
// idiomatic TypeScript under strict null checks, so converting to `undefined`
|
|
return {
|
|
moduleName: fetchModuleMetaDataRes.moduleName() || undefined,
|
|
filename: fetchModuleMetaDataRes.filename() || undefined,
|
|
mediaType: fetchModuleMetaDataRes.mediaType(),
|
|
sourceCode
|
|
};
|
|
}
|
|
|
|
/** Utility function to turn the number of bytes into a human readable
|
|
* unit */
|
|
function humanFileSize(bytes: number): string {
|
|
const thresh = 1000;
|
|
if (Math.abs(bytes) < thresh) {
|
|
return bytes + " B";
|
|
}
|
|
const units = ["kB", "MB", "GB", "TB", "PB", "EB", "ZB", "YB"];
|
|
let u = -1;
|
|
do {
|
|
bytes /= thresh;
|
|
++u;
|
|
} while (Math.abs(bytes) >= thresh && u < units.length - 1);
|
|
return `${bytes.toFixed(1)} ${units[u]}`;
|
|
}
|
|
|
|
/** Ops to rest for caching source map and compiled js */
|
|
function cache(extension: string, moduleId: string, contents: string): void {
|
|
util.log("compiler.cache", moduleId);
|
|
const builder = flatbuffers.createBuilder();
|
|
const extension_ = builder.createString(extension);
|
|
const moduleId_ = builder.createString(moduleId);
|
|
const contents_ = builder.createString(contents);
|
|
const inner = msg.Cache.createCache(
|
|
builder,
|
|
extension_,
|
|
moduleId_,
|
|
contents_
|
|
);
|
|
const baseRes = sendSync(builder, msg.Any.Cache, inner);
|
|
assert(baseRes == null);
|
|
}
|
|
|
|
const encoder = new TextEncoder();
|
|
|
|
/** Given a fileName and the data, emit the file to the file system. */
|
|
function emitBundle(fileName: string, data: string): void {
|
|
// For internal purposes, when trying to emit to `$deno$` just no-op
|
|
if (fileName.startsWith("$deno$")) {
|
|
console.warn("skipping compiler.emitBundle", fileName);
|
|
return;
|
|
}
|
|
const encodedData = encoder.encode(data);
|
|
console.log(`Emitting bundle to "${fileName}"`);
|
|
writeFileSync(fileName, encodedData);
|
|
console.log(`${humanFileSize(encodedData.length)} emitted.`);
|
|
}
|
|
|
|
/** Returns the TypeScript Extension enum for a given media type. */
|
|
function getExtension(
|
|
fileName: string,
|
|
mediaType: msg.MediaType
|
|
): ts.Extension {
|
|
switch (mediaType) {
|
|
case msg.MediaType.JavaScript:
|
|
return ts.Extension.Js;
|
|
case msg.MediaType.TypeScript:
|
|
return fileName.endsWith(".d.ts") ? ts.Extension.Dts : ts.Extension.Ts;
|
|
case msg.MediaType.Json:
|
|
return ts.Extension.Json;
|
|
case msg.MediaType.Unknown:
|
|
default:
|
|
throw TypeError("Cannot resolve extension.");
|
|
}
|
|
}
|
|
|
|
class Host implements ts.CompilerHost {
|
|
private readonly _options: ts.CompilerOptions = {
|
|
allowJs: true,
|
|
allowNonTsExtensions: true,
|
|
checkJs: false,
|
|
esModuleInterop: true,
|
|
module: ts.ModuleKind.ESNext,
|
|
outDir: OUT_DIR,
|
|
resolveJsonModule: true,
|
|
sourceMap: true,
|
|
stripComments: true,
|
|
target: ts.ScriptTarget.ESNext
|
|
};
|
|
|
|
private _resolveModule(specifier: string, referrer: string): ModuleMetaData {
|
|
// Handle built-in assets specially.
|
|
if (specifier.startsWith(ASSETS)) {
|
|
const moduleName = specifier.split("/").pop()!;
|
|
const assetName = moduleName.includes(".")
|
|
? moduleName
|
|
: `${moduleName}.d.ts`;
|
|
assert(assetName in assetSourceCode, `No such asset "${assetName}"`);
|
|
const sourceCode = assetSourceCode[assetName];
|
|
return {
|
|
moduleName,
|
|
filename: specifier,
|
|
mediaType: msg.MediaType.TypeScript,
|
|
sourceCode
|
|
};
|
|
}
|
|
return fetchModuleMetaData(specifier, referrer);
|
|
}
|
|
|
|
/* Deno specific APIs */
|
|
|
|
/** Provides the `ts.HostCompiler` interface for Deno.
|
|
*
|
|
* @param _bundle Set to a string value to configure the host to write out a
|
|
* bundle instead of caching individual files.
|
|
*/
|
|
constructor(private _bundle?: string) {
|
|
if (this._bundle) {
|
|
// options we need to change when we are generating a bundle
|
|
const bundlerOptions: ts.CompilerOptions = {
|
|
module: ts.ModuleKind.AMD,
|
|
inlineSourceMap: true,
|
|
outDir: undefined,
|
|
outFile: `${OUT_DIR}/bundle.js`,
|
|
sourceMap: false
|
|
};
|
|
Object.assign(this._options, bundlerOptions);
|
|
}
|
|
}
|
|
|
|
/** Take a configuration string, parse it, and use it to merge with the
|
|
* compiler's configuration options. The method returns an array of compiler
|
|
* options which were ignored, or `undefined`.
|
|
*/
|
|
configure(path: string, configurationText: string): ConfigureResponse {
|
|
util.log("compile.configure", path);
|
|
const { config, error } = ts.parseConfigFileTextToJson(
|
|
path,
|
|
configurationText
|
|
);
|
|
if (error) {
|
|
return { diagnostics: [error] };
|
|
}
|
|
const { options, errors } = ts.convertCompilerOptionsFromJson(
|
|
config.compilerOptions,
|
|
cwd()
|
|
);
|
|
const ignoredOptions: string[] = [];
|
|
for (const key of Object.keys(options)) {
|
|
if (
|
|
ignoredCompilerOptions.includes(key) &&
|
|
(!(key in this._options) || options[key] !== this._options[key])
|
|
) {
|
|
ignoredOptions.push(key);
|
|
delete options[key];
|
|
}
|
|
}
|
|
Object.assign(this._options, options);
|
|
return {
|
|
ignoredOptions: ignoredOptions.length ? ignoredOptions : undefined,
|
|
diagnostics: errors.length ? errors : undefined
|
|
};
|
|
}
|
|
|
|
/* TypeScript CompilerHost APIs */
|
|
|
|
fileExists(_fileName: string): boolean {
|
|
return notImplemented();
|
|
}
|
|
|
|
getCanonicalFileName(fileName: string): string {
|
|
// console.log("getCanonicalFileName", fileName);
|
|
return fileName;
|
|
}
|
|
|
|
getCompilationSettings(): ts.CompilerOptions {
|
|
util.log("getCompilationSettings()");
|
|
return this._options;
|
|
}
|
|
|
|
getCurrentDirectory(): string {
|
|
return "";
|
|
}
|
|
|
|
getDefaultLibFileName(_options: ts.CompilerOptions): string {
|
|
return ASSETS + "/lib.deno_runtime.d.ts";
|
|
}
|
|
|
|
getNewLine(): string {
|
|
return "\n";
|
|
}
|
|
|
|
getSourceFile(
|
|
fileName: string,
|
|
languageVersion: ts.ScriptTarget,
|
|
onError?: (message: string) => void,
|
|
shouldCreateNewSourceFile?: boolean
|
|
): ts.SourceFile | undefined {
|
|
assert(!shouldCreateNewSourceFile);
|
|
util.log("getSourceFile", fileName);
|
|
const moduleMetaData = this._resolveModule(fileName, ".");
|
|
if (!moduleMetaData || !moduleMetaData.sourceCode) {
|
|
return undefined;
|
|
}
|
|
return ts.createSourceFile(
|
|
fileName,
|
|
moduleMetaData.sourceCode,
|
|
languageVersion
|
|
);
|
|
}
|
|
|
|
readFile(_fileName: string): string | undefined {
|
|
return notImplemented();
|
|
}
|
|
|
|
resolveModuleNames(
|
|
moduleNames: string[],
|
|
containingFile: string
|
|
): Array<ts.ResolvedModuleFull | undefined> {
|
|
util.log("resolveModuleNames()", { moduleNames, containingFile });
|
|
return moduleNames.map(
|
|
(moduleName): ts.ResolvedModuleFull | undefined => {
|
|
const moduleMetaData = this._resolveModule(moduleName, containingFile);
|
|
if (moduleMetaData.moduleName) {
|
|
const resolvedFileName = moduleMetaData.moduleName;
|
|
// This flags to the compiler to not go looking to transpile functional
|
|
// code, anything that is in `/$asset$/` is just library code
|
|
const isExternalLibraryImport = moduleName.startsWith(ASSETS);
|
|
const r = {
|
|
resolvedFileName,
|
|
isExternalLibraryImport,
|
|
extension: getExtension(resolvedFileName, moduleMetaData.mediaType)
|
|
};
|
|
return r;
|
|
} else {
|
|
return undefined;
|
|
}
|
|
}
|
|
);
|
|
}
|
|
|
|
useCaseSensitiveFileNames(): boolean {
|
|
return true;
|
|
}
|
|
|
|
writeFile(
|
|
fileName: string,
|
|
data: string,
|
|
writeByteOrderMark: boolean,
|
|
onError?: (message: string) => void,
|
|
sourceFiles?: ReadonlyArray<ts.SourceFile>
|
|
): void {
|
|
util.log("writeFile", fileName);
|
|
try {
|
|
if (this._bundle) {
|
|
emitBundle(this._bundle, data);
|
|
} else {
|
|
assert(sourceFiles != null && sourceFiles.length == 1);
|
|
const sourceFileName = sourceFiles![0].fileName;
|
|
|
|
if (fileName.endsWith(".map")) {
|
|
// Source Map
|
|
cache(".map", sourceFileName, data);
|
|
} else if (fileName.endsWith(".js") || fileName.endsWith(".json")) {
|
|
// Compiled JavaScript
|
|
cache(".js", sourceFileName, data);
|
|
} else {
|
|
assert(false, "Trying to cache unhandled file type " + fileName);
|
|
}
|
|
}
|
|
} catch (e) {
|
|
if (onError) {
|
|
onError(String(e));
|
|
} else {
|
|
throw e;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// provide the "main" function that will be called by the privileged side when
|
|
// lazy instantiating the compiler web worker
|
|
window.compilerMain = function compilerMain(): void {
|
|
// workerMain should have already been called since a compiler is a worker.
|
|
window.onmessage = ({ data }: { data: CompilerReq }): void => {
|
|
const { rootNames, configPath, config, bundle } = data;
|
|
const host = new Host(bundle);
|
|
|
|
let emitSkipped = true;
|
|
let diagnostics: ts.Diagnostic[] | undefined;
|
|
|
|
// if there is a configuration supplied, we need to parse that
|
|
if (config && config.length && configPath) {
|
|
const configResult = host.configure(configPath, config);
|
|
const ignoredOptions = configResult.ignoredOptions;
|
|
diagnostics = configResult.diagnostics;
|
|
if (ignoredOptions) {
|
|
console.warn(
|
|
yellow(`Unsupported compiler options in "${configPath}"\n`) +
|
|
cyan(` The following options were ignored:\n`) +
|
|
` ${ignoredOptions
|
|
.map((value): string => bold(value))
|
|
.join(", ")}`
|
|
);
|
|
}
|
|
}
|
|
|
|
// if there was a configuration and no diagnostics with it, we will continue
|
|
// to generate the program and possibly emit it.
|
|
if (!diagnostics || (diagnostics && diagnostics.length === 0)) {
|
|
const options = host.getCompilationSettings();
|
|
const program = ts.createProgram(rootNames, options, host);
|
|
|
|
diagnostics = ts.getPreEmitDiagnostics(program).filter(
|
|
({ code }): boolean => {
|
|
// TS2691: An import path cannot end with a '.ts' extension. Consider
|
|
// importing 'bad-module' instead.
|
|
if (code === 2691) return false;
|
|
// TS5009: Cannot find the common subdirectory path for the input files.
|
|
if (code === 5009) return false;
|
|
// TS5055: Cannot write file
|
|
// 'http://localhost:4545/tests/subdir/mt_application_x_javascript.j4.js'
|
|
// because it would overwrite input file.
|
|
if (code === 5055) return false;
|
|
// TypeScript is overly opinionated that only CommonJS modules kinds can
|
|
// support JSON imports. Allegedly this was fixed in
|
|
// Microsoft/TypeScript#26825 but that doesn't seem to be working here,
|
|
// so we will ignore complaints about this compiler setting.
|
|
if (code === 5070) return false;
|
|
return true;
|
|
}
|
|
);
|
|
|
|
// We will only proceed with the emit if there are no diagnostics.
|
|
if (diagnostics && diagnostics.length === 0) {
|
|
if (bundle) {
|
|
console.log(`Bundling "${bundle}"`);
|
|
}
|
|
const emitResult = program.emit();
|
|
emitSkipped = emitResult.emitSkipped;
|
|
// emitResult.diagnostics is `readonly` in TS3.5+ and can't be assigned
|
|
// without casting.
|
|
diagnostics = emitResult.diagnostics as ts.Diagnostic[];
|
|
}
|
|
}
|
|
|
|
const result: EmitResult = {
|
|
emitSkipped,
|
|
diagnostics: diagnostics.length
|
|
? fromTypeScriptDiagnostic(diagnostics)
|
|
: undefined
|
|
};
|
|
|
|
postMessage(result);
|
|
|
|
// The compiler isolate exits after a single message.
|
|
workerClose();
|
|
};
|
|
};
|