tsrun/dist/tsnode.js

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2018-07-01 15:30:05 +00:00
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const path_1 = require("path");
const fs_1 = require("fs");
const os_1 = require("os");
const sourceMapSupport = require("source-map-support");
const mkdirp = require("mkdirp");
const crypto = require("crypto");
const yn = require("yn");
const arrify = require("arrify");
const bufferFrom = require("buffer-from");
const make_error_1 = require("make-error");
const util = require("util");
/**
* @internal
*/
exports.INSPECT_CUSTOM = util.inspect.custom || 'inspect';
/**
* Debugging `ts-node`.
*/
const shouldDebug = yn(process.env.TS_NODE_DEBUG);
const debug = shouldDebug ? console.log.bind(console, 'ts-node') : () => undefined;
const debugFn = shouldDebug ?
(key, fn) => {
return (x) => {
debug(key, x);
return fn(x);
};
} :
(_, fn) => fn;
/**
* Export the current version.
*/
exports.VERSION = require('../package.json').version;
/**
* Default register options.
*/
exports.DEFAULTS = {
files: yn(process.env['TS_NODE_FILES']),
cache: yn(process.env['TS_NODE_CACHE'], { default: true }),
pretty: yn(process.env['TS_NODE_PRETTY']),
cacheDirectory: process.env['TS_NODE_CACHE_DIRECTORY'],
compiler: process.env['TS_NODE_COMPILER'],
compilerOptions: parse(process.env['TS_NODE_COMPILER_OPTIONS']),
ignore: split(process.env['TS_NODE_IGNORE']),
project: process.env['TS_NODE_PROJECT'],
skipIgnore: yn(process.env['TS_NODE_SKIP_IGNORE']),
skipProject: yn(process.env['TS_NODE_SKIP_PROJECT']),
ignoreDiagnostics: split(process.env['TS_NODE_IGNORE_DIAGNOSTICS']),
typeCheck: yn(process.env['TS_NODE_TYPE_CHECK']),
transpileOnly: yn(process.env['TS_NODE_TRANSPILE_ONLY'])
};
/**
* Default TypeScript compiler options required by `ts-node`.
*/
const DEFAULT_COMPILER_OPTIONS = {
sourceMap: true,
inlineSourceMap: false,
inlineSources: true,
declaration: false,
noEmit: false,
outDir: '$$ts-node$$'
};
/**
* Split a string array of values.
*/
function split(value) {
return typeof value === 'string' ? value.split(/ *, */g) : undefined;
}
exports.split = split;
/**
* Parse a string as JSON.
*/
function parse(value) {
return typeof value === 'string' ? JSON.parse(value) : undefined;
}
exports.parse = parse;
/**
* Replace backslashes with forward slashes.
*/
function normalizeSlashes(value) {
return value.replace(/\\/g, '/');
}
exports.normalizeSlashes = normalizeSlashes;
/**
* TypeScript diagnostics error.
*/
class TSError extends make_error_1.BaseError {
constructor(diagnosticText, diagnosticCodes) {
super(` Unable to compile TypeScript:\n${diagnosticText}`);
this.diagnosticText = diagnosticText;
this.diagnosticCodes = diagnosticCodes;
this.name = 'TSError';
}
/**
* @internal
*/
[exports.INSPECT_CUSTOM]() {
return this.diagnosticText;
}
}
exports.TSError = TSError;
/**
* Return a default temp directory based on home directory of user.
*/
function getTmpDir() {
const hash = crypto.createHash('sha256').update(os_1.homedir(), 'utf8').digest('hex');
return path_1.join(os_1.tmpdir(), `ts-node-${hash}`);
}
/**
* Register TypeScript compiler.
*/
function register(opts = {}) {
const options = Object.assign({}, exports.DEFAULTS, opts);
const cacheDirectory = options.cacheDirectory || getTmpDir();
const originalJsHandler = require.extensions['.js'];
const ignoreDiagnostics = arrify(options.ignoreDiagnostics).concat([
6059,
18002,
18003 // "No inputs were found in config file."
]).map(Number);
const memoryCache = {
contents: Object.create(null),
versions: Object.create(null),
outputs: Object.create(null)
};
const ignore = options.skipIgnore ? [] : arrify(options.ignore || '/node_modules/').map(str => new RegExp(str));
// Install source map support and read from memory cache.
sourceMapSupport.install({
environment: 'node',
retrieveFile(path) {
return memoryCache.outputs[path];
}
});
// Require the TypeScript compiler and configuration.
const cwd = process.cwd();
const { compilerOptions, project, skipProject } = options;
const compiler = options.compiler || 'typescript';
const typeCheck = options.typeCheck === true || options.transpileOnly !== true;
const ts = require(compiler);
const transformers = options.transformers || undefined;
const readFile = options.readFile || ts.sys.readFile;
const fileExists = options.fileExists || ts.sys.fileExists;
const config = readConfig(cwd, ts, fileExists, readFile, compilerOptions, project, skipProject);
const configDiagnosticList = filterDiagnostics(config.errors, ignoreDiagnostics);
const extensions = ['.ts', '.tsx'];
const fileNames = options.files ? config.fileNames : [];
const cachedir = path_1.join(path_1.resolve(cwd, cacheDirectory), getCompilerDigest({
version: ts.version,
options: config.options,
fileNames,
typeCheck,
ignoreDiagnostics,
compiler
}));
const diagnosticHost = {
getNewLine: () => os_1.EOL,
getCurrentDirectory: () => cwd,
getCanonicalFileName: (path) => path
};
const formatDiagnostics = options.pretty
? ts.formatDiagnosticsWithColorAndContext
: ts.formatDiagnostics;
function createTSError(diagnostics) {
const diagnosticText = formatDiagnostics(diagnostics, diagnosticHost);
const diagnosticCodes = diagnostics.map(x => x.code);
return new TSError(diagnosticText, diagnosticCodes);
}
// Render the configuration errors and exit the script.
if (configDiagnosticList.length)
throw createTSError(configDiagnosticList);
// Enable `allowJs` when flag is set.
if (config.options.allowJs) {
extensions.push('.js');
extensions.push('.jsx');
}
// Initialize files from TypeScript into project.
for (const path of fileNames)
memoryCache.versions[path] = 1;
/**
* Get the extension for a transpiled file.
*/
const getExtension = config.options.jsx === ts.JsxEmit.Preserve ?
((path) => /\.[tj]sx$/.test(path) ? '.jsx' : '.js') :
((_) => '.js');
/**
* Create the basic required function using transpile mode.
*/
let getOutput = function (code, fileName, lineOffset = 0) {
const result = ts.transpileModule(code, {
fileName,
transformers,
compilerOptions: config.options,
reportDiagnostics: true
});
const diagnosticList = result.diagnostics ?
filterDiagnostics(result.diagnostics, ignoreDiagnostics) :
[];
if (diagnosticList.length)
throw createTSError(diagnosticList);
return [result.outputText, result.sourceMapText];
};
let getTypeInfo = function (_code, _fileName, _position) {
throw new TypeError(`Type information is unavailable without "--type-check"`);
};
// Use full language services when the fast option is disabled.
if (typeCheck) {
// Set the file contents into cache.
const updateMemoryCache = function (code, fileName) {
if (memoryCache.contents[fileName] !== code) {
memoryCache.contents[fileName] = code;
memoryCache.versions[fileName] = (memoryCache.versions[fileName] || 0) + 1;
}
};
// Create the compiler host for type checking.
const serviceHost = {
getScriptFileNames: () => Object.keys(memoryCache.versions),
getScriptVersion: (fileName) => {
const version = memoryCache.versions[fileName];
// We need to return `undefined` and not a string here because TypeScript will use
// `getScriptVersion` and compare against their own version - which can be `undefined`.
// If we don't return `undefined` it results in `undefined === "undefined"` and run
// `createProgram` again (which is very slow). Using a `string` assertion here to avoid
// TypeScript errors from the function signature (expects `(x: string) => string`).
return version === undefined ? undefined : String(version);
},
getScriptSnapshot(fileName) {
// Read contents into TypeScript memory cache.
if (!Object.prototype.hasOwnProperty.call(memoryCache.contents, fileName)) {
memoryCache.contents[fileName] = readFile(fileName);
}
const contents = memoryCache.contents[fileName];
if (contents === undefined)
return;
return ts.ScriptSnapshot.fromString(contents);
},
fileExists: debugFn('fileExists', fileExists),
readFile: debugFn('readFile', readFile),
readDirectory: debugFn('readDirectory', ts.sys.readDirectory),
getDirectories: debugFn('getDirectories', ts.sys.getDirectories),
directoryExists: debugFn('directoryExists', ts.sys.directoryExists),
getNewLine: () => os_1.EOL,
getCurrentDirectory: () => cwd,
getCompilationSettings: () => config.options,
getDefaultLibFileName: () => ts.getDefaultLibFilePath(config.options),
getCustomTransformers: () => transformers
};
const service = ts.createLanguageService(serviceHost);
getOutput = function (code, fileName, lineOffset = 0) {
// Must set memory cache before attempting to read file.
updateMemoryCache(code, fileName);
const output = service.getEmitOutput(fileName);
// Get the relevant diagnostics - this is 3x faster than `getPreEmitDiagnostics`.
const diagnostics = service.getCompilerOptionsDiagnostics()
.concat(service.getSyntacticDiagnostics(fileName))
.concat(service.getSemanticDiagnostics(fileName));
const diagnosticList = filterDiagnostics(diagnostics, ignoreDiagnostics);
if (diagnosticList.length)
throw createTSError(diagnosticList);
if (output.emitSkipped) {
throw new TypeError(`${path_1.relative(cwd, fileName)}: Emit skipped`);
}
// Throw an error when requiring `.d.ts` files.
if (output.outputFiles.length === 0) {
return ['', ''];
}
return ['', ''];
return [output.outputFiles[1].text, output.outputFiles[0].text];
};
getTypeInfo = function (code, fileName, position) {
updateMemoryCache(code, fileName);
const info = service.getQuickInfoAtPosition(fileName, position);
const name = ts.displayPartsToString(info ? info.displayParts : []);
const comment = ts.displayPartsToString(info ? info.documentation : []);
return { name, comment };
};
}
const compile = readThrough(cachedir, options.cache === true, memoryCache, getOutput, getExtension);
const register = { cwd, compile, getTypeInfo, extensions, cachedir, ts };
// Register the extensions.
extensions.forEach(extension => {
registerExtension(extension, ignore, register, originalJsHandler);
});
return register;
}
exports.register = register;
/**
* Check if the filename should be ignored.
*/
function shouldIgnore(filename, ignore) {
const relname = normalizeSlashes(filename);
return ignore.some(x => x.test(relname));
}
/**
* Register the extension for node.
*/
function registerExtension(ext, ignore, register, originalHandler) {
const old = require.extensions[ext] || originalHandler;
require.extensions[ext] = function (m, filename) {
if (shouldIgnore(filename, ignore)) {
return old(m, filename);
}
const _compile = m._compile;
m._compile = function (code, fileName) {
debug('module._compile', fileName);
return _compile.call(this, register.compile(code, fileName), fileName);
};
return old(m, filename);
};
}
/**
* Do post-processing on config options to support `ts-node`.
*/
function fixConfig(ts, config) {
// Delete options that *should not* be passed through.
delete config.options.out;
delete config.options.outFile;
delete config.options.declarationDir;
delete config.options.declarationMap;
delete config.options.emitDeclarationOnly;
// Target ES5 output by default (instead of ES3).
if (config.options.target === undefined) {
config.options.target = ts.ScriptTarget.ES5;
}
// Target CommonJS modules by default (instead of magically switching to ES6 when the target is ES6).
if (config.options.module === undefined) {
config.options.module = ts.ModuleKind.CommonJS;
}
return config;
}
/**
* Load TypeScript configuration.
*/
function readConfig(cwd, ts, fileExists, readFile, compilerOptions, project, noProject) {
let config = { compilerOptions: {} };
let basePath = normalizeSlashes(cwd);
let configFileName = undefined;
// Read project configuration when available.
if (!noProject) {
configFileName = project
? normalizeSlashes(path_1.resolve(cwd, project))
: ts.findConfigFile(normalizeSlashes(cwd), fileExists);
if (configFileName) {
const result = ts.readConfigFile(configFileName, readFile);
// Return diagnostics.
if (result.error) {
return { errors: [result.error], fileNames: [], options: {} };
}
config = result.config;
basePath = normalizeSlashes(path_1.dirname(configFileName));
}
}
// Override default configuration options `ts-node` requires.
config.compilerOptions = Object.assign({}, config.compilerOptions, compilerOptions, DEFAULT_COMPILER_OPTIONS);
return fixConfig(ts, ts.parseJsonConfigFileContent(config, ts.sys, basePath, undefined, configFileName));
}
/**
* Wrap the function with caching.
*/
function readThrough(cachedir, shouldCache, memoryCache, compile, getExtension) {
if (shouldCache === false) {
return function (code, fileName, lineOffset) {
debug('readThrough', fileName);
const [value, sourceMap] = compile(code, fileName, lineOffset);
const output = updateOutput(value, fileName, sourceMap, getExtension);
memoryCache.outputs[fileName] = output;
return output;
};
}
// Make sure the cache directory exists before continuing.
mkdirp.sync(cachedir);
return function (code, fileName, lineOffset) {
debug('readThrough', fileName);
const cachePath = path_1.join(cachedir, getCacheName(code, fileName));
const extension = getExtension(fileName);
const outputPath = `${cachePath}${extension}`;
try {
const output = fs_1.readFileSync(outputPath, 'utf8');
if (isValidCacheContent(output)) {
memoryCache.outputs[fileName] = output;
return output;
}
}
catch (err) { /* Ignore. */ }
const [value, sourceMap] = compile(code, fileName, lineOffset);
const output = updateOutput(value, fileName, sourceMap, getExtension);
memoryCache.outputs[fileName] = output;
fs_1.writeFileSync(outputPath, output);
return output;
};
}
/**
* Update the output remapping the source map.
*/
function updateOutput(outputText, fileName, sourceMap, getExtension) {
const base64Map = bufferFrom(updateSourceMap(sourceMap, fileName), 'utf8').toString('base64');
const sourceMapContent = `data:application/json;charset=utf-8;base64,${base64Map}`;
const sourceMapLength = `${path_1.basename(fileName)}.map`.length + (getExtension(fileName).length - path_1.extname(fileName).length);
return outputText.slice(0, -sourceMapLength) + sourceMapContent;
}
/**
* Update the source map contents for improved output.
*/
function updateSourceMap(sourceMapText, fileName) {
const sourceMap = JSON.parse(sourceMapText);
sourceMap.file = fileName;
sourceMap.sources = [fileName];
delete sourceMap.sourceRoot;
return JSON.stringify(sourceMap);
}
/**
* Get the file name for the cache entry.
*/
function getCacheName(sourceCode, fileName) {
return crypto.createHash('sha256')
.update(path_1.extname(fileName), 'utf8')
.update('\x00', 'utf8')
.update(sourceCode, 'utf8')
.digest('hex');
}
/**
* Ensure the given cached content is valid by sniffing for a base64 encoded '}'
* at the end of the content, which should exist if there is a valid sourceMap present.
*/
function isValidCacheContent(contents) {
return /(?:9|0=|Q==)$/.test(contents.slice(-3));
}
/**
* Create a hash of the current configuration.
*/
function getCompilerDigest(obj) {
return crypto.createHash('sha256').update(JSON.stringify(obj), 'utf8').digest('hex');
}
/**
* Filter diagnostics.
*/
function filterDiagnostics(diagnostics, ignore) {
return diagnostics.filter(x => ignore.indexOf(x.code) === -1);
}
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