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"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.getEmitOutput = exports.getEmitFromWatchHost = exports.getInputFileNameFromOutput = exports.getOutputFileNames = exports.forEachResolvedProjectReference = exports.buildSolutionReferences = exports.reportTranspileErrors = exports.getCustomTransformers = exports.initializeInstance = exports.getTypeScriptInstance = void 0;
const chalk = require("chalk");
const fs = require("fs");
const path = require("path");
const webpack = require("webpack");
const after_compile_1 = require("./after-compile");
const compilerSetup_1 = require("./compilerSetup");
const config_1 = require("./config");
const constants_1 = require("./constants");
const instance_cache_1 = require("./instance-cache");
const logger = require("./logger");
const servicesHost_1 = require("./servicesHost");
const utils_1 = require("./utils");
const watch_run_1 = require("./watch-run");
const instancesBySolutionBuilderConfigs = new Map();
/**
* The loader is executed once for each file seen by webpack. However, we need to keep
* a persistent instance of TypeScript that contains all of the files in the program
* along with definition files and options. This function either creates an instance
* or returns the existing one. Multiple instances are possible by using the
* `instance` property.
*/
function getTypeScriptInstance(loaderOptions, loader) {
const existing = (0, instance_cache_1.getTSInstanceFromCache)(loader._compiler, loaderOptions.instance);
if (existing) {
if (!existing.initialSetupPending) {
(0, utils_1.ensureProgram)(existing);
}
return { instance: existing };
}
const level = loaderOptions.colors && chalk.supportsColor ? chalk.supportsColor.level : 0;
const colors = new chalk.Instance({ level });
const log = logger.makeLogger(loaderOptions, colors);
const compiler = (0, compilerSetup_1.getCompiler)(loaderOptions, log);
if (compiler.errorMessage !== undefined) {
return {
error: (0, utils_1.makeError)(loaderOptions, colors.red(compiler.errorMessage), ''),
};
}
return successfulTypeScriptInstance(loaderOptions, loader, log, colors, compiler.compiler, compiler.compilerCompatible, compiler.compilerDetailsLogMessage);
}
exports.getTypeScriptInstance = getTypeScriptInstance;
function createFilePathKeyMapper(compiler, loaderOptions) {
// Cache file path key - a map lookup is much faster than filesystem/regex operations & the result will never change
const filePathMapperCache = new Map();
// FileName lowercasing copied from typescript
const fileNameLowerCaseRegExp = /[^\u0130\u0131\u00DFa-z0-9\\/:\-_\. ]+/g;
return (0, utils_1.useCaseSensitiveFileNames)(compiler, loaderOptions)
? pathResolve
: toFileNameLowerCase;
function pathResolve(filePath) {
let cachedPath = filePathMapperCache.get(filePath);
if (!cachedPath) {
cachedPath = path.resolve(filePath);
filePathMapperCache.set(filePath, cachedPath);
}
return cachedPath;
}
function toFileNameLowerCase(filePath) {
let cachedPath = filePathMapperCache.get(filePath);
if (!cachedPath) {
const filePathKey = pathResolve(filePath);
cachedPath = fileNameLowerCaseRegExp.test(filePathKey)
? filePathKey.replace(fileNameLowerCaseRegExp, ch => ch.toLowerCase())
: filePathKey;
filePathMapperCache.set(filePath, cachedPath);
}
return cachedPath;
}
}
function successfulTypeScriptInstance(loaderOptions, loader, log, colors, compiler, compilerCompatible, compilerDetailsLogMessage) {
const configFileAndPath = (0, config_1.getConfigFile)(compiler, colors, loader, loaderOptions, compilerCompatible, log, compilerDetailsLogMessage);
if (configFileAndPath.configFileError !== undefined) {
const { message, file } = configFileAndPath.configFileError;
return {
error: (0, utils_1.makeError)(loaderOptions, colors.red('error while reading tsconfig.json:' + constants_1.EOL + message), file),
};
}
const { configFilePath, configFile } = configFileAndPath;
if (configFilePath) {
loader.addBuildDependency(configFilePath);
}
const filePathKeyMapper = createFilePathKeyMapper(compiler, loaderOptions);
if (configFilePath && loaderOptions.projectReferences) {
const configFileKey = filePathKeyMapper(configFilePath);
const existing = getExistingSolutionBuilderHost(configFileKey);
if (existing) {
// Reuse the instance if config file for project references is shared.
(0, instance_cache_1.setTSInstanceInCache)(loader._compiler, loaderOptions.instance, existing);
return { instance: existing };
}
}
const module = loader._module;
const basePath = loaderOptions.context || path.dirname(configFilePath || '');
const configParseResult = (0, config_1.getConfigParseResult)(compiler, configFile, basePath, configFilePath, loaderOptions);
if (configParseResult.errors.length > 0 && !loaderOptions.happyPackMode) {
const errors = (0, utils_1.formatErrors)(configParseResult.errors, loaderOptions, colors, compiler, { file: configFilePath }, loader.context);
errors.forEach(error => module.addError(error));
return {
error: (0, utils_1.makeError)(loaderOptions, colors.red('error while parsing tsconfig.json'), configFilePath || ''),
};
}
const compilerOptions = (0, compilerSetup_1.getCompilerOptions)(configParseResult, compiler);
const rootFileNames = new Set();
const files = new Map();
const otherFiles = new Map();
const appendTsTsxSuffixesIfRequired = loaderOptions.appendTsSuffixTo.length > 0 ||
loaderOptions.appendTsxSuffixTo.length > 0
? (filePath) => (0, utils_1.appendSuffixesIfMatch)({
'.ts': loaderOptions.appendTsSuffixTo,
'.tsx': loaderOptions.appendTsxSuffixTo,
}, filePath)
: (filePath) => filePath;
if (loaderOptions.transpileOnly) {
// quick return for transpiling
// we do need to check for any issues with TS options though
const transpileInstance = {
compiler,
compilerOptions,
appendTsTsxSuffixesIfRequired,
loaderOptions,
rootFileNames,
files,
otherFiles,
version: 0,
program: undefined,
dependencyGraph: new Map(),
transformers: {},
colors,
initialSetupPending: true,
reportTranspileErrors: true,
configFilePath,
configParseResult,
log,
filePathKeyMapper,
};
(0, instance_cache_1.setTSInstanceInCache)(loader._compiler, loaderOptions.instance, transpileInstance);
return { instance: transpileInstance };
}
// Load initial files (core lib files, any files specified in tsconfig.json)
let normalizedFilePath;
try {
const filesToLoad = loaderOptions.onlyCompileBundledFiles
? configParseResult.fileNames.filter(fileName => constants_1.dtsDtsxOrDtsDtsxMapRegex.test(fileName))
: configParseResult.fileNames;
filesToLoad.forEach(filePath => {
normalizedFilePath = path.normalize(filePath);
files.set(filePathKeyMapper(normalizedFilePath), {
fileName: normalizedFilePath,
text: fs.readFileSync(normalizedFilePath, 'utf-8'),
version: 0,
});
rootFileNames.add(normalizedFilePath);
});
}
catch (exc) {
return {
error: (0, utils_1.makeError)(loaderOptions, colors.red(`A file specified in tsconfig.json could not be found: ${normalizedFilePath}`), normalizedFilePath),
};
}
const instance = {
compiler,
compilerOptions,
appendTsTsxSuffixesIfRequired,
loaderOptions,
rootFileNames,
files,
otherFiles,
languageService: null,
version: 0,
transformers: {},
dependencyGraph: new Map(),
colors,
initialSetupPending: true,
configFilePath,
configParseResult,
log,
filePathKeyMapper,
};
(0, instance_cache_1.setTSInstanceInCache)(loader._compiler, loaderOptions.instance, instance);
return { instance };
}
function getExistingSolutionBuilderHost(key) {
const existing = instancesBySolutionBuilderConfigs.get(key);
if (existing)
return existing;
for (const instance of instancesBySolutionBuilderConfigs.values()) {
if (instance.solutionBuilderHost.configFileInfo.has(key)) {
return instance;
}
}
return undefined;
}
function addAssetHooks(loader, instance) {
// makeAfterCompile is a closure. It returns a function which closes over the variable checkAllFilesForErrors
// We need to get the function once and then reuse it, otherwise it will be recreated each time
// and all files will always be checked.
const cachedMakeAfterCompile = (0, after_compile_1.makeAfterCompile)(instance, instance.configFilePath);
const makeAssetsCallback = (compilation) => {
compilation.hooks.processAssets.tap({
name: 'ts-loader',
stage: webpack.Compilation.PROCESS_ASSETS_STAGE_ADDITIONAL,
}, () => {
cachedMakeAfterCompile(compilation, () => {
return null;
});
});
};
// We need to add the hook above for each run.
// For the first run, we just need to add the hook to loader._compilation
makeAssetsCallback(loader._compilation);
// For future calls in watch mode we need to watch for a new compilation and add the hook
loader._compiler.hooks.compilation.tap('ts-loader', makeAssetsCallback);
}
function initializeInstance(loader, instance) {
if (!instance.initialSetupPending) {
return;
}
instance.initialSetupPending = false;
if (instance.loaderOptions.transpileOnly) {
const program = (instance.program =
instance.configParseResult.projectReferences !== undefined
? instance.compiler.createProgram({
rootNames: instance.configParseResult.fileNames,
options: instance.configParseResult.options,
projectReferences: instance.configParseResult.projectReferences,
})
: instance.compiler.createProgram([], instance.compilerOptions));
const getProgram = () => program;
instance.transformers = getCustomTransformers(instance.loaderOptions, program, getProgram);
// Setup watch run for solution building
if (instance.solutionBuilderHost) {
addAssetHooks(loader, instance);
loader._compiler.hooks.watchRun.tapAsync('ts-loader', (0, watch_run_1.makeWatchRun)(instance, loader));
}
}
else {
if (!loader._compiler.hooks) {
throw new Error("You may be using an old version of webpack; please check you're using at least version 4");
}
if (instance.loaderOptions.experimentalWatchApi) {
instance.log.logInfo('Using watch api');
// If there is api available for watch, use it instead of language service
instance.watchHost = (0, servicesHost_1.makeWatchHost)(getScriptRegexp(instance), loader, instance, instance.configParseResult.projectReferences);
instance.watchOfFilesAndCompilerOptions =
instance.compiler.createWatchProgram(instance.watchHost);
instance.builderProgram =
instance.watchOfFilesAndCompilerOptions.getProgram();
const getProgram = () => { var _a; return (_a = instance.builderProgram) === null || _a === void 0 ? void 0 : _a.getProgram(); };
instance.program = getProgram();
instance.transformers = getCustomTransformers(instance.loaderOptions, instance.program, getProgram);
}
else {
instance.servicesHost = (0, servicesHost_1.makeServicesHost)(getScriptRegexp(instance), loader, instance, instance.configParseResult.projectReferences);
instance.languageService = instance.compiler.createLanguageService(instance.servicesHost, instance.compiler.createDocumentRegistry());
const getProgram = () => instance.languageService.getProgram();
instance.transformers = getCustomTransformers(instance.loaderOptions, getProgram(), getProgram);
}
addAssetHooks(loader, instance);
loader._compiler.hooks.watchRun.tapAsync('ts-loader', (0, watch_run_1.makeWatchRun)(instance, loader));
}
}
exports.initializeInstance = initializeInstance;
function getCustomTransformers(loaderOptions, program, getProgram) {
// same strategy as https://github.com/s-panferov/awesome-typescript-loader/pull/531/files
let { getCustomTransformers: customerTransformers } = loaderOptions;
let getCustomTransformers = Function.prototype;
if (typeof customerTransformers === 'function') {
getCustomTransformers = customerTransformers;
}
else if (typeof customerTransformers === 'string') {
try {
customerTransformers = require(customerTransformers);
}
catch (err) {
throw new Error(`Failed to load customTransformers from "${loaderOptions.getCustomTransformers}": ${err instanceof Error ? err.message : 'unknown error'}`);
}
if (typeof customerTransformers !== 'function') {
throw new Error(`Custom transformers in "${loaderOptions.getCustomTransformers}" should export a function, got ${typeof customerTransformers}`);
}
getCustomTransformers = customerTransformers;
}
return getCustomTransformers(program, getProgram);
}
exports.getCustomTransformers = getCustomTransformers;
function getScriptRegexp(instance) {
// If resolveJsonModules is set, we should accept json files
if (instance.configParseResult.options.resolveJsonModule) {
// if allowJs is set then we should accept js(x) files
return instance.configParseResult.options.allowJs === true
? /\.([cm]?[tj]s|[tj]sx|json)$/i
: /\.([cm]?ts|tsx|json)$/i;
}
// if allowJs is set then we should accept js(x) files
return instance.configParseResult.options.allowJs === true
? /\.([cm]?[tj]s|[tj]sx)$/i
: /\.([cm]?ts|tsx)$/i;
}
function reportTranspileErrors(instance, loader) {
if (!instance.reportTranspileErrors) {
return;
}
const module = loader._module;
instance.reportTranspileErrors = false;
// happypack does not have _module.errors - see https://github.com/TypeStrong/ts-loader/issues/336
if (!instance.loaderOptions.happyPackMode) {
const solutionErrors = (0, servicesHost_1.getSolutionErrors)(instance, loader.context);
const diagnostics = instance.program.getOptionsDiagnostics();
const errors = (0, utils_1.formatErrors)(diagnostics, instance.loaderOptions, instance.colors, instance.compiler, { file: instance.configFilePath || 'tsconfig.json' }, loader.context);
[...solutionErrors, ...errors].forEach(error => module.addError(error));
}
}
exports.reportTranspileErrors = reportTranspileErrors;
function buildSolutionReferences(instance, loader) {
if (!(0, utils_1.supportsSolutionBuild)(instance)) {
return;
}
if (!instance.solutionBuilderHost) {
// Use solution builder
instance.log.logInfo('Using SolutionBuilder api');
const scriptRegex = getScriptRegexp(instance);
instance.solutionBuilderHost = (0, servicesHost_1.makeSolutionBuilderHost)(scriptRegex, loader, instance);
const solutionBuilder = instance.compiler.createSolutionBuilderWithWatch(instance.solutionBuilderHost, instance.configParseResult.projectReferences.map(ref => ref.path), { verbose: true });
solutionBuilder.build();
instance.solutionBuilderHost.ensureAllReferenceTimestamps();
instancesBySolutionBuilderConfigs.set(instance.filePathKeyMapper(instance.configFilePath), instance);
}
else {
instance.solutionBuilderHost.buildReferences();
}
}
exports.buildSolutionReferences = buildSolutionReferences;
function forEachResolvedProjectReference(resolvedProjectReferences, cb) {
let seenResolvedRefs;
return worker(resolvedProjectReferences);
function worker(resolvedRefs) {
if (resolvedRefs) {
for (const resolvedRef of resolvedRefs) {
if (!resolvedRef) {
continue;
}
if (seenResolvedRefs &&
seenResolvedRefs.some(seenRef => seenRef === resolvedRef)) {
// ignore recursives
continue;
}
(seenResolvedRefs || (seenResolvedRefs = [])).push(resolvedRef);
const result = cb(resolvedRef) || worker(resolvedRef.references);
if (result) {
return result;
}
}
}
return undefined;
}
}
exports.forEachResolvedProjectReference = forEachResolvedProjectReference;
// This code is here as a temporary holder
function fileExtensionIs(fileName, ext) {
return fileName.endsWith(ext);
}
function rootDirOfOptions(instance, configFile) {
return (configFile.options.rootDir ||
instance.compiler.getDirectoryPath(configFile.options.configFilePath));
}
function getOutputPathWithoutChangingExt(instance, inputFileName, configFile, ignoreCase, outputDir) {
return outputDir
? instance.compiler.resolvePath(outputDir, instance.compiler.getRelativePathFromDirectory(rootDirOfOptions(instance, configFile), inputFileName, ignoreCase))
: inputFileName;
}
function getOutputJSFileName(instance, inputFileName, configFile, ignoreCase) {
if (configFile.options.emitDeclarationOnly) {
return undefined;
}
const isJsonFile = fileExtensionIs(inputFileName, '.json');
const outputFileName = instance.compiler.changeExtension(getOutputPathWithoutChangingExt(instance, inputFileName, configFile, ignoreCase, configFile.options.outDir), isJsonFile
? '.json'
: fileExtensionIs(inputFileName, '.tsx') &&
configFile.options.jsx === instance.compiler.JsxEmit.Preserve
? '.jsx'
: '.js');
return !isJsonFile ||
instance.compiler.comparePaths(inputFileName, outputFileName, configFile.options.configFilePath, ignoreCase) !== instance.compiler.Comparison.EqualTo
? outputFileName
: undefined;
}
function getOutputFileNames(instance, configFile, inputFileName) {
const ignoreCase = !(0, utils_1.useCaseSensitiveFileNames)(instance.compiler, instance.loaderOptions);
if (instance.compiler.getOutputFileNames) {
return instance.compiler.getOutputFileNames(configFile, inputFileName, ignoreCase);
}
const outputs = [];
const addOutput = (fileName) => fileName && outputs.push(fileName);
const js = getOutputJSFileName(instance, inputFileName, configFile, ignoreCase);
addOutput(js);
if (!fileExtensionIs(inputFileName, '.json')) {
if (js && configFile.options.sourceMap) {
addOutput(`${js}.map`);
}
if ((configFile.options.declaration || configFile.options.composite) &&
instance.compiler.hasTSFileExtension(inputFileName)) {
const dts = instance.compiler.getOutputDeclarationFileName(inputFileName, configFile, ignoreCase);
addOutput(dts);
if (configFile.options.declarationMap) {
addOutput(`${dts}.map`);
}
}
}
return outputs;
}
exports.getOutputFileNames = getOutputFileNames;
function getInputFileNameFromOutput(instance, filePath) {
if (filePath.match(constants_1.tsTsxRegex) && !constants_1.declarationRegex.test(filePath)) {
return undefined;
}
if (instance.solutionBuilderHost) {
return instance.solutionBuilderHost.getInputFileNameFromOutput(filePath);
}
const program = (0, utils_1.ensureProgram)(instance);
return (program &&
program.getResolvedProjectReferences &&
forEachResolvedProjectReference(program.getResolvedProjectReferences(), ({ commandLine }) => {
const { options, fileNames } = commandLine;
if (!options.outFile && !options.out) {
const input = fileNames.find(file => getOutputFileNames(instance, commandLine, file).find(name => path.resolve(name) === filePath));
return input && path.resolve(input);
}
return undefined;
}));
}
exports.getInputFileNameFromOutput = getInputFileNameFromOutput;
function getEmitFromWatchHost(instance, filePath) {
const program = (0, utils_1.ensureProgram)(instance);
const builderProgram = instance.builderProgram;
if (builderProgram && program) {
if (filePath) {
const existing = instance.watchHost.outputFiles.get(instance.filePathKeyMapper(filePath));
if (existing) {
return existing;
}
}
const outputFiles = [];
const writeFile = (fileName, text, writeByteOrderMark) => {
if (fileName.endsWith('.tsbuildinfo')) {
instance.watchHost.tsbuildinfo = {
name: fileName,
writeByteOrderMark,
text,
};
}
else {
outputFiles.push({ name: fileName, writeByteOrderMark, text });
}
};
const sourceFile = filePath ? program.getSourceFile(filePath) : undefined;
// Try emit Next file
while (true) {
const result = builderProgram.emitNextAffectedFile(writeFile,
/*cancellationToken*/ undefined,
/*emitOnlyDtsFiles*/ false, instance.transformers);
if (!result) {
break;
}
// Only put the output file in the cache if the source came from webpack and
// was processed by the loaders
if (result.affected === sourceFile) {
instance.watchHost.outputFiles.set(instance.filePathKeyMapper(result.affected.fileName), outputFiles.slice());
return outputFiles;
}
}
}
return undefined;
}
exports.getEmitFromWatchHost = getEmitFromWatchHost;
function getEmitOutput(instance, filePath) {
if (fileExtensionIs(filePath, instance.compiler.Extension.Dts)) {
return [];
}
if ((0, utils_1.isReferencedFile)(instance, filePath)) {
return instance.solutionBuilderHost.getOutputFilesFromReferencedProjectInput(filePath);
}
const program = (0, utils_1.ensureProgram)(instance);
if (program !== undefined) {
const sourceFile = program.getSourceFile(filePath);
const outputFiles = [];
const writeFile = (fileName, text, writeByteOrderMark) => outputFiles.push({ name: fileName, writeByteOrderMark, text });
const outputFilesFromWatch = getEmitFromWatchHost(instance, filePath);
if (outputFilesFromWatch) {
return outputFilesFromWatch;
}
program.emit(sourceFile, writeFile,
/*cancellationToken*/ undefined,
/*emitOnlyDtsFiles*/ false, instance.transformers);
return outputFiles;
}
else {
// Emit Javascript
return instance.languageService.getProgram().getSourceFile(filePath) ===
undefined
? []
: instance.languageService.getEmitOutput(filePath).outputFiles;
}
}
exports.getEmitOutput = getEmitOutput;
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