102 lines
3.0 KiB
JavaScript
102 lines
3.0 KiB
JavaScript
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const fs = require('fs');
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const { parse } = require('@babel/parser');
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const { default: generator } = require('@babel/generator');
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const { default: traverse } = require('@babel/traverse');
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const { resolve, extname, join, dirname } = require('path');
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const { tmpdir } = require('os');
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const { readdir } = require('fs').promises;
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const { cwd } = require('process');
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const exts = ['.ts'];
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const excludes = [
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'/node_modules/',
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'/examples/',
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'/dist/',
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'/jsx.d.ts',
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'/mod.d.ts',
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'/deno.d.ts',
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];
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const regExpRemoveExts = /\.(ts|tsx|js|jsx)$/i;
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const tsconfig = {
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compilerOptions: {
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types: ['node'],
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module: 'commonjs',
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declaration: true,
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removeComments: true,
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emitDecoratorMetadata: true,
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experimentalDecorators: true,
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allowSyntheticDefaultImports: true,
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target: 'es6',
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sourceMap: true,
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outDir: join(cwd(), 'nodejs'),
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baseUrl: './',
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},
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};
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// const distFolder = join(tmpdir(), `deno2nodejs-${+new Date()}`);
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const distFolder = join(cwd(), `tmp`);
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console.log('distFolder:', distFolder);
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fs.mkdirSync(distFolder);
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fs.writeFileSync(join(distFolder, 'tsconfig.json'), JSON.stringify(tsconfig));
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async function getFiles(dir) {
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const dirents = await readdir(dir, { withFileTypes: true });
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const files = await Promise.all(
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dirents.map((dirent) => {
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const res = resolve(dir, dirent.name);
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return dirent.isDirectory() ? getFiles(res) : res;
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}),
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);
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return Array.prototype.concat(...files);
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}
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getFiles('./').then((files) => {
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const tsFiles = files.filter(
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(f) =>
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exts.includes(extname(f)) &&
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!excludes.some((val) => f.includes(val)),
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);
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tsFiles.forEach((file) => {
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const code = deno2nodejs(file);
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const dist = join(distFolder, file.substr(cwd().length));
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const ensureDir = dirname(dist);
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fs.mkdirSync(ensureDir, { recursive: true });
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fs.writeFileSync(dist, code);
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// console.log({ file, dist, ensureDir });
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});
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});
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// we might want to execute `tsc -p ./tmp/tsconfig.json` in here
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function deno2nodejs(file) {
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const source = fs.readFileSync(file).toString();
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const ast = parse(source, {
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sourceType: 'module',
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plugins: ['typescript', 'classProperties'],
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});
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traverse(ast, {
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ImportDeclaration: function ImportDeclaration(path) {
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var source = path.node.source;
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if (!source.value.match(regExpRemoveExts)) {
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return;
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}
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source.value = source.value.replace(regExpRemoveExts, '');
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},
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ExportDeclaration: function ExportDeclaration(path) {
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var source = path.node.source;
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if (source) {
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if (!source.value.match(regExpRemoveExts)) {
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return;
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}
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source.value = source.value.replace(regExpRemoveExts, '');
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}
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},
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});
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const { code } = generator(ast);
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return code;
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}
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