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feat(typescript): create a better ts_project worker (#2416)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,102 @@ | ||
| /* THIS FILE GENERATED FROM .ts; see BUILD.bazel */ /* clang-format off */"use strict"; | ||
| var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) { | ||
| function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); } | ||
| return new (P || (P = Promise))(function (resolve, reject) { | ||
| function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } } | ||
| function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } } | ||
| function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); } | ||
| step((generator = generator.apply(thisArg, _arguments || [])).next()); | ||
| }); | ||
| }; | ||
| Object.defineProperty(exports, "__esModule", { value: true }); | ||
| const fs = require("fs"); | ||
| const ts = require("typescript"); | ||
| const MNEMONIC = 'TsProject'; | ||
| const worker = require('./worker'); | ||
| let createWatchCompilerHost; | ||
| const formatHost = { | ||
| getCanonicalFileName: (path) => path, | ||
| getCurrentDirectory: ts.sys.getCurrentDirectory, | ||
| getNewLine: () => ts.sys.newLine, | ||
| }; | ||
| const reportDiagnostic = (diagnostic) => { | ||
| worker.log(ts.formatDiagnostic(diagnostic, formatHost)); | ||
| }; | ||
| const reportWatchStatusChanged = (diagnostic) => { | ||
| worker.debug(ts.formatDiagnostic(diagnostic, formatHost)); | ||
| }; | ||
| function createWatchProgram(options, tsconfigPath, setTimeout) { | ||
| const host = createWatchCompilerHost(tsconfigPath, options, Object.assign(Object.assign({}, ts.sys), { setTimeout }), ts.createEmitAndSemanticDiagnosticsBuilderProgram, reportDiagnostic, reportWatchStatusChanged); | ||
| return ts.createWatchProgram(host); | ||
| } | ||
| let workerRequestTimestamp; | ||
| let cachedWatchedProgram; | ||
| let consolidateChangesCallback; | ||
| let cachedWatchProgramArgs; | ||
| function getWatchProgram(args) { | ||
| const newWatchArgs = args.join(' '); | ||
| if (cachedWatchedProgram && cachedWatchProgramArgs && cachedWatchProgramArgs !== newWatchArgs) { | ||
| cachedWatchedProgram.close(); | ||
| cachedWatchedProgram = undefined; | ||
| cachedWatchProgramArgs = undefined; | ||
| } | ||
| if (!cachedWatchedProgram) { | ||
| const parsedArgs = ts.parseCommandLine(args); | ||
| const tsconfigPath = args[args.indexOf('--project') + 1]; | ||
| cachedWatchProgramArgs = newWatchArgs; | ||
| cachedWatchedProgram = createWatchProgram(parsedArgs.options, tsconfigPath, (callback) => { | ||
| consolidateChangesCallback = callback; | ||
| }); | ||
| } | ||
| return cachedWatchedProgram; | ||
| } | ||
| function emitOnce(args) { | ||
| var _a; | ||
| return __awaiter(this, void 0, void 0, function* () { | ||
| const watchProgram = getWatchProgram(args); | ||
| if (consolidateChangesCallback) { | ||
| consolidateChangesCallback(); | ||
| } | ||
| workerRequestTimestamp = Date.now(); | ||
| const result = yield ((_a = watchProgram) === null || _a === void 0 ? void 0 : _a.getProgram().emit(undefined, undefined, { | ||
| isCancellationRequested: function (timestamp) { | ||
| return timestamp !== workerRequestTimestamp; | ||
| }.bind(null, workerRequestTimestamp), | ||
| throwIfCancellationRequested: function (timestamp) { | ||
| if (timestamp !== workerRequestTimestamp) { | ||
| throw new ts.OperationCanceledException(); | ||
| } | ||
| }.bind(null, workerRequestTimestamp), | ||
| })); | ||
| return Boolean(result && result.diagnostics.length === 0); | ||
| }); | ||
| } | ||
| function main() { | ||
| const typescriptRequirePath = process.argv[process.argv.indexOf('--typescript_require_path') + 1]; | ||
| try { | ||
| const customTypescriptModule = require(typescriptRequirePath); | ||
| createWatchCompilerHost = customTypescriptModule.createWatchCompilerHost; | ||
| } | ||
| catch (e) { | ||
| worker.log(`typescript_require_path '${typescriptRequirePath}' could not be resolved`); | ||
| throw e; | ||
| } | ||
| if (process.argv.includes('--persistent_worker')) { | ||
| worker.log(`Running ${MNEMONIC} as a Bazel worker`); | ||
| worker.runWorkerLoop(emitOnce); | ||
| } | ||
| else { | ||
| worker.log(`Running ${MNEMONIC} as a standalone process`); | ||
| worker.log(`Started a new process to perform this action. Your build might be misconfigured, try | ||
| --strategy=${MNEMONIC}=worker`); | ||
| let argsFilePath = process.argv.pop(); | ||
| if (argsFilePath.startsWith('@')) { | ||
| argsFilePath = argsFilePath.slice(1); | ||
| } | ||
| const args = fs.readFileSync(argsFilePath).toString().split('\n'); | ||
| emitOnce(args).finally(() => { var _a; return (_a = cachedWatchedProgram) === null || _a === void 0 ? void 0 : _a.close(); }); | ||
| } | ||
| } | ||
| if (require.main === module) { | ||
| main(); | ||
| } |
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