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import * as fs from 'fs';
import * as path from 'path';
import * as os from 'os';
import * as childProcess from 'child_process';
import * as tsrtti from './index';
import transformer from './transformer';
import { rimraf } from 'rimraf';
export interface RunInvocation {
code: string;
transformerEnabled?: boolean;
moduleType?: 'commonjs' | 'esm';
target?: ts.ScriptTarget;
compilerOptions?: Partial<ts.CompilerOptions>;
outputTransformer?: (filename: string, code: string) => string;
modules?: Record<string, any>;
trace?: boolean;
checks?: (exports: any) => void;
}
function normalizeFilename(filename: string, extension?: string) {
if (extension && !filename.endsWith(`.${extension}`))
filename = `${filename}.${extension}`;
if (!filename.includes('/'))
filename = `./${filename}`;
return filename;
}
export function compile(invocation: RunInvocation): Record<string, string> {
let options: ts.CompilerOptions = {
...ts.getDefaultCompilerOptions(),
...<ts.CompilerOptions>{
target: ts.ScriptTarget.ES2016,
module: ts.ModuleKind.CommonJS,
moduleResolution: ts.ModuleResolutionKind.NodeJs,
experimentalDecorators: true,
lib: ['lib.es2016.d.ts'],
noLib: false,
emitDecoratorMetadata: false,
suppressOutputPathCheck: true,
rtti: <any>{ trace: invocation.trace === true, throwOnFailure: true }
},
...invocation.compilerOptions || {},
};
if (options.noLib)
delete options.lib;
let inputs: Record<string, ts.SourceFile> = {
'./main.ts': ts.createSourceFile('./main.ts', invocation.code, options.target!)
};
let otherFiles = Object.keys(invocation?.modules ?? {}).filter(x => x.endsWith('.ts') || x.startsWith('@types/'));
for (let filename of otherFiles) {
let source = invocation.modules[filename];
if (filename.startsWith('@types/')) {
let packageName = filename.replace(/^@types\//, '');
source = `declare module "${packageName}" {\n${source}\n}`;
filename = `./${packageName}.d.ts`;
}
inputs[filename] = ts.createSourceFile(filename, source, options.target!);
}
let outputs: Record<string, string> = {};
if (invocation.moduleType) {
if (invocation.moduleType === 'esm')
options.module = ts.ModuleKind.ES2020;
}
if (invocation.target) {
options.target = invocation.target;
}
if (invocation.trace) {
console.log(`Test: Feeding ${Object.keys(inputs).length} files to Typescript: ${Object.keys(inputs).join(', ')}`);
}
const program = ts.createProgram(Object.keys(inputs), options, {
getSourceFile: (fileName: string) => {
fileName = normalizeFilename(fileName, 'ts');
if (inputs[fileName]) {
if (invocation.trace)
console.log(`Test: Typescript opened input '${fileName}'`);
return inputs[fileName];
}
// libs
let libLoc = path.resolve(__dirname, '../node_modules/typescript/lib', fileName);
try {
let stat = fs.statSync(libLoc);
if (!stat.isFile()) {
if (invocation.trace)
console.log(`Test: Typescript tried to open library '${fileName}': not found`);
return;
}
} catch (e) {
if (invocation.trace)
console.log(`Test: Typescript tried to open library '${fileName}', error: ${e.message}`);
return;
}
let buf = fs.readFileSync(libLoc);
if (invocation.trace)
console.log(`Test: Typescript opened library ${fileName}`);
return ts.createSourceFile(libLoc, buf.toString('utf-8'), ts.ScriptTarget.Latest);
},
writeFile: (filename: string, text: string) => {
if (invocation.trace) {
console.log(`Test: Emitting '${filename}'...`);
}
filename = normalizeFilename(filename, 'js');
outputs[filename] = text;
},
getDefaultLibFileName: () => "lib.d.ts",
useCaseSensitiveFileNames: () => false,
getCanonicalFileName: fileName => fileName,
getCurrentDirectory: () => "",
getNewLine: () => "\n",
fileExists: (fileName: string): boolean => {
let exists = false;
fileName = normalizeFilename(fileName, 'ts');
if (!!inputs[fileName] || !!invocation?.modules?.[fileName]) {
exists = true;
} else {
let libLoc = path.resolve(__dirname, '../node_modules/typescript/lib', fileName);
try {
let stat = fs.statSync(libLoc);
if (stat.isFile())
exists = true;
} catch (e) {
exists = false;
}
}
return exists;
},
readFile: () => "",
directoryExists: () => true,
getDirectories: () => []
});
if (invocation.trace) {
// TODO: All tests should have this enabled
let optionsDiags = program.getOptionsDiagnostics();
let syntacticDiags = program.getSyntacticDiagnostics();
let semanticDiags = program.getSemanticDiagnostics();
let diags = ([] as ts.Diagnostic[]).concat(optionsDiags, syntacticDiags, semanticDiags);
diags = diags.filter(x => ![2307].includes(x.code)); // filter 'Cannot find module...'
if (diags.length > 0) {
throw new Error(`Typescript did not compile this test correctly. Errors: ${JSON.stringify(diags.map(x => ts.formatDiagnostic(x, {
getCanonicalFileName: fileName => fileName,
getCurrentDirectory: () => './test',
getNewLine: () => `\n`
})))}`);
}
}
if (invocation.transformerEnabled !== false) {
program.emit(undefined, undefined, undefined, undefined, {
before: [transformer(program)]
});
} else {
program.emit();
}
if (outputs['./main.js'] === undefined) {
if (program.getOptionsDiagnostics().length > 0) {
console.dir(program.getOptionsDiagnostics());
} else {
console.error(`Diagnostics for './main.ts':`);
console.dir(program.getSyntacticDiagnostics(inputs['./main.ts']));
}
throw new Error(`Failed to compile test code: '${invocation.code}'. Code was emitted for: ${JSON.stringify(Object.keys(outputs))}`);
}
if (invocation.outputTransformer) {
for (let key of Object.keys(outputs)) {
outputs[key] = invocation.outputTransformer(key, outputs[key]);
}
}
return outputs;
}
interface Module {
exports: any;
filename: string;
code?: string;
}
function runCommonJS(module: Module, $require) {
try {
eval(`(
function(module, exports, require){
${module.code}
}
)`)(module, module.exports, $require);
} catch (e) {
throw new Error(`[CJS] Failed to run '${module.filename}': ${e.message}`);
}
return module;
}
const { Script } = require('vm');
let pinnedScripts: any[] = [];
let originalRun = Script.prototype.runInThisContext;
Script.prototype.runInThisContext = function (options) {
console.log(`HAPPENING`);
pinnedScripts.push(this);
return originalRun.call(this, options);
};
/**
* Compile the given code using Typescript and typescript-rtti transformer plugin and return the
* resulting exports.
*
* @param invocation
* @returns
*/
export async function runSimple(invocation: RunInvocation) {
await runSimpleCJS({ ...invocation, moduleType: 'commonjs' });
await runSimpleESM({ ...invocation, moduleType: 'esm' });
}
async function runSimpleCJS(invocation: RunInvocation) {
let outputs = compile(invocation);
if (invocation.trace) {
let outputs = compile(invocation);
for (let filename of Object.keys(outputs)) {
console.log(` // [CJS] ${filename}\n\n ${outputs[filename].replace(/\r?\n/g, `\n `)}`);
}
}
let modules: Record<string, Module> = {};
let $require = (moduleName: string) => {
let fileName = moduleName;
fileName = normalizeFilename(fileName, 'js');
let code = outputs[fileName];
if (!code && typeof invocation.modules?.[moduleName] === 'string') {
code = invocation.modules?.[moduleName];
}
if (code) {
if (modules[fileName])
return modules[fileName].exports;
return modules[fileName] ?? runCommonJS(modules[fileName] = {
exports: {}, code,
filename: fileName
}, $require).exports;
}
let symbols = invocation.modules?.[moduleName];
if (!symbols && moduleName === 'typescript-rtti') {
symbols = tsrtti;
}
if (!symbols) {
throw new Error(
`(RTTI Test) Cannot find module '${moduleName}' [aka '${fileName}']. `
+ `Compilation outputs are: ${JSON.stringify(Object.keys(outputs))}, `
+ `JSON modules are: ${JSON.stringify(Object.keys(invocation?.modules ?? [])
.filter(x => !x.endsWith('.ts')))}`
);
}
return symbols;
};
let exports = $require('./main.js');
if (invocation.checks) {
try {
invocation.checks(exports);
} catch (e) {
if (invocation.trace)
console.error(`The check error occurred in CommonJS mode.`);
throw e;
}
}
}
async function runSimpleESM(invocation: RunInvocation) {
if (invocation.trace) {
let outputs = compile(invocation);
for (let filename of Object.keys(outputs)) {
console.log(` // [ESM] ${filename}\n\n ${outputs[filename].replace(/\r?\n/g, `\n `)}`);
}
}
let tsrttiLocation = path.resolve(__dirname, "..", "dist.esm", "index.js").replace(/\\/g, '/');
invocation.modules ??= {}
if (!invocation.modules['typescript-rtti']) {
invocation.modules['typescript-rtti'] = `
export * from "file://${tsrttiLocation}";
`
}
let outputs = compile(invocation);
let exports: Record<string, any> = {};
let files = { ...outputs, ...invocation.modules };
let folder = path.resolve(os.tmpdir(), `tsrtti_esm_test_${Math.random() * 1_000_000 | 0}`);
await rimraf(folder);
fs.mkdirSync(folder);
fs.mkdirSync(path.resolve(folder, "node_modules"));
fs.writeFileSync(path.resolve(folder, "package.json"), JSON.stringify({
type: 'module',
main: './__test.js'
}));
let pkgJson = JSON.stringify({
type: 'module',
main: './index.js'
});
for (let file of Object.keys(files)) {
if (file.startsWith('@types/'))
continue;
let filePath = path.resolve(folder, file);
let fileContent = files[file];
if (typeof fileContent !== 'string') {
let object = fileContent;
fileContent = ``;
for (let key of Object.keys(object)) {
fileContent += `export const ${key} = ${serializeJavascriptObject(object[key])};`;
fileContent += `\n`;
}
}
if (!file.startsWith("./")) {
filePath = path.resolve(folder, "node_modules", file, "index.js");
fs.mkdirSync(path.resolve(folder, "node_modules", file));
fs.writeFileSync(path.resolve(folder, "node_modules", file, "package.json"), pkgJson);
}
fs.writeFileSync(filePath, fileContent);
}
let reflectMetadataLocation = path.resolve(__dirname, "..", "node_modules", "reflect-metadata").replace(/\\/g, '/');
let chaiLocation = path.resolve(__dirname, "..", "node_modules", "chai").replace(/\\/g, '/')
fs.writeFileSync(path.resolve(folder, "__test.js"), `
import "file://${reflectMetadataLocation}/Reflect.js";
import * as exports from './main.js';
import * as chai_1 from "file://${chaiLocation}/index.mjs";
(${(invocation.checks ?? (() => {})).toString()})(exports)
`);
if (invocation.trace) {
console.log(`RTTI Test: executing code under test...`);
}
let proc = childProcess.spawn('node', [`${path.resolve(folder, '__test.js')}`], {
stdio: 'pipe'
});
if (invocation.trace) {
console.log(`RTTI Test: test folder is ${folder}`);
}
let stdout = Buffer.alloc(0);
proc.stdout.on('data', buf => stdout = Buffer.concat([stdout, Buffer.from(buf)]));
proc.stderr.on('data', buf => stdout = Buffer.concat([stdout, Buffer.from(buf)]));
await new Promise<void>((resolve, reject) => proc.on('exit', code => {
if (code === 0) {
resolve();
return;
}
reject(new Error(`Failed in ESM mode. Test folder: ${folder}\nOutput:\n${stdout.toString('utf-8')}`));
}));
await rimraf(folder);
}
function serializeJavascriptObject(object: object, depth = 1) {
if (object === undefined)
return `undefined`;
else if (typeof object === 'function')
return object.toString();
else if (object === null || typeof object !== 'object')
return JSON.stringify(object);
let obj = `{\n`;
for (let key of Object.keys(object)) {
obj += `${Array(depth + 1).join(' ')}${JSON.stringify(key)}: ${serializeJavascriptObject(object[key], depth + 1)},\n`;
}
obj += `${Array(depth).join(' ')}}`
return obj;
}
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