tsc programmatic

tsc.programmatic.ts

// build.js
import ts from "typescript";
import path from "path";

async function build() {
  const projectDir = path.resolve("./packages/ds-tokens");
  const configPath = path.join(projectDir, "tsconfig.build.json");

  // 1. Charger tsconfig
  const configFile = ts.readConfigFile(configPath, ts.sys.readFile);
  if (configFile.error) {
    throw new Error(ts.formatDiagnosticsWithColorAndContext([configFile.error], {
      getCurrentDirectory: ts.sys.getCurrentDirectory,
      getCanonicalFileName: f => f,
      getNewLine: () => "\n",
    }));
  }

  // 2. Parser la config et override l'outDir
  const parsed = ts.parseJsonConfigFileContent(
    {
      ...configFile.config,
      compilerOptions: {
        ...configFile.config.compilerOptions,
        outDir: "dist/foo", // override ici
      },
    },
    ts.sys,
    projectDir
  );

  // 3. Créer le programme et compiler
  const program = ts.createProgram(parsed.fileNames, parsed.options);
  const emitResult = program.emit();

  // 4. Collecter les erreurs éventuelles
  const allDiagnostics = ts.getPreEmitDiagnostics(program).concat(emitResult.diagnostics);

  if (allDiagnostics.length > 0) {
    const formatHost = {
      getCanonicalFileName: path => path,
      getCurrentDirectory: ts.sys.getCurrentDirectory,
      getNewLine: () => "\n",
    };

    console.error(
      ts.formatDiagnosticsWithColorAndContext(allDiagnostics, formatHost)
    );
  }

  if (emitResult.emitSkipped) {
    throw new Error("❌ Compilation échouée");
  }

  console.log("✅ Compilation réussie");
}

// tu peux await car c’est dans une async
build().catch(err => {
  console.error(err);
  process.exit(1);
});