vite-plugin-dts-build/dist/cjs/worker.cjs

A Vite plugin that runs TypeScript build process in a separate worker thread for better performance and efficient incremental builds

"use strict";
const node_path = require("node:path");
const node_worker_threads = require("node:worker_threads");
const node_process = require("node:process");
const ts = require("typescript");
const fsExtra = require("fs-extra");
const {
  readConfigFile,
  parseJsonConfigFileContent,
  createProgram,
  createEmitAndSemanticDiagnosticsBuilderProgram,
  createSolutionBuilderHost,
  createSolutionBuilder,
  getParsedCommandLineOfConfigFile,
  getPreEmitDiagnostics,
  sys,
  formatDiagnostic,
  getLineAndCharacterOfPosition,
  flattenDiagnosticMessageText
} = ts;
const PROJECT_ROOT = node_process.cwd();
const WORKER_DATA = node_worker_threads.workerData;
const tsconfigPath = node_path.resolve(
  WORKER_DATA.tsconfigPath ?? node_path.join(PROJECT_ROOT, "tsconfig.json")
);
const configFile = readConfigFile(tsconfigPath, sys.readFile);
if (configFile.error) {
  throw new Error(errFormatDiagnostic(configFile.error));
}
if (WORKER_DATA.include) {
  configFile.config.include = stringToStringArray(WORKER_DATA.include);
}
if (WORKER_DATA.exclude) {
  configFile.config.exclude = stringToStringArray(WORKER_DATA.exclude);
}
const parsedConfig = parseJsonConfigFileContent(
  configFile.config,
  sys,
  node_path.dirname(tsconfigPath)
);
if (parsedConfig.errors.length > 0) {
  parsedConfig.errors.forEach((error) => {
    reportDiagnostic(error);
  });
  throw new Error("Failed to parse tsconfig.json");
}
const compilerOptions = {
  incremental: true,
  // assumeChangesOnlyAffectDirectDependencies: false,
  declaration: true,
  // declarationMap: false,
  emitDeclarationOnly: true,
  // sourceMap: false,
  // inlineSourceMap: false,
  // traceResolution: false,
  ...parsedConfig.options,
  ...WORKER_DATA.compilerOptions ?? {}
};
const distDir = WORKER_DATA.outDir ?? compilerOptions.declarationDir ?? compilerOptions.outDir ?? node_path.join(PROJECT_ROOT, "dist");
const cacheDir = WORKER_DATA.cacheDir ?? node_path.join(PROJECT_ROOT, ".tsBuildCache");
compilerOptions.declarationDir = cacheDir;
const buildOptions = {
  dry: false,
  force: false,
  verbose: false,
  stopBuildOnErrors: true,
  ...WORKER_DATA.buildOptions ?? {}
};
const checkerMode = compilerOptions?.noEmit === true || buildOptions?.dry === true;
if (WORKER_DATA.mode === "compile") {
  (async () => await runCompile())();
} else {
  (async () => await runBuild())();
}
async function runCompile() {
  const program = createProgram({
    rootNames: parsedConfig.fileNames,
    options: compilerOptions
  });
  const emitResult = program.emit();
  const allDiagnostics = getPreEmitDiagnostics(program).concat(
    emitResult.diagnostics
  );
  allDiagnostics.forEach((diagnostic) => {
    if (diagnostic.file && diagnostic.start !== void 0) {
      const { line, character } = getLineAndCharacterOfPosition(
        diagnostic.file,
        diagnostic.start
      );
      const message = flattenDiagnosticMessageText(
        diagnostic.messageText,
        "\n"
      );
      console.error(
        `${diagnostic.file.fileName} (${line + 1},${character + 1}): ${message}`
      );
    } else {
      console.error(flattenDiagnosticMessageText(diagnostic.messageText, "\n"));
    }
  });
  const exitCode = emitResult.emitSkipped ? 1 : 0;
  return await copyToDist(exitCode);
}
async function runBuild() {
  const host = createSolutionBuilderHost(
    sys,
    createBuilderProgram,
    reportDiagnostic,
    reportSolutionBuilderStatus,
    reportErrorSummary
  );
  const parseConfigHost = {
    fileExists: sys.fileExists,
    readFile: sys.readFile,
    readDirectory: sys.readDirectory,
    useCaseSensitiveFileNames: sys.useCaseSensitiveFileNames,
    getCurrentDirectory: sys.getCurrentDirectory,
    onUnRecoverableConfigFileDiagnostic: reportDiagnostic
  };
  host.getParsedCommandLine = (fileName) => getParsedCommandLineOfConfigFile(
    fileName,
    compilerOptions,
    parseConfigHost
  );
  const builder = createSolutionBuilder(host, [tsconfigPath], buildOptions);
  const exitCode = builder.build();
  return await copyToDist(exitCode);
}
function createBuilderProgram(rootNames, options, host, oldProgram, configFileParsingDiagnostics, projectReferences) {
  return createEmitAndSemanticDiagnosticsBuilderProgram(
    rootNames,
    { ...options ?? {}, ...compilerOptions },
    host,
    oldProgram,
    configFileParsingDiagnostics,
    projectReferences
  );
}
function reportDiagnostic(diagnostic) {
  console.error(errFormatDiagnostic(diagnostic));
}
function reportSolutionBuilderStatus(diagnostic) {
  console.info(errFormatDiagnostic(diagnostic));
}
function reportErrorSummary(errorCount) {
  if (errorCount !== 0) {
    console.error(`${errorCount} errors occurred.`);
  }
}
function copyToDist(exitCode) {
  return new Promise((resolve2, reject) => {
    if (exitCode === 0) {
      if (checkerMode) {
        node_worker_threads.parentPort?.postMessage("check-end");
        resolve2();
      } else {
        node_worker_threads.parentPort?.postMessage("build-end");
        node_worker_threads.parentPort?.once("message", () => {
          fsExtra.copy(`${cacheDir}/`, `${distDir}/`).then(() => {
            node_worker_threads.parentPort?.close();
            resolve2();
          }).catch((error) => {
            console.error("failed:", error);
            reject(error);
          });
        });
      }
    } else {
      reject();
    }
  });
}
function stringToStringArray(value) {
  return typeof value === "string" ? [value] : value;
}
function errFormatDiagnostic(diagnostic) {
  return formatDiagnostic(diagnostic, {
    getCanonicalFileName: (fileName) => fileName,
    getCurrentDirectory: sys.getCurrentDirectory,
    getNewLine: () => sys.newLine
  });
}