takin/lib/utils/bundleMjsOrTsFile.js

Front end engineering base toolchain and scaffold

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.bundleMjsOrTsFile = void 0;
const esbuild_1 = require("esbuild");
const fs_extra_1 = __importDefault(require("fs-extra"));
const path_1 = __importDefault(require("path"));
/**
 * 使用 esbuild 读取 ts 或 mjs 文件内容
 * @param cwd - 当前工作目录
 * @param fileName - 配置文件路径
 * @param mjs - 是否为 mjs 文件类型
 * @returns 返回解析后的代码字符串
 */
async function bundleMjsOrTsFile(cwd, fileName, mjs = false) {
    const result = await (0, esbuild_1.build)({
        absWorkingDir: cwd,
        entryPoints: [fileName],
        outfile: 'out.js',
        write: false,
        platform: 'node',
        target: ['node12.2.0'],
        bundle: true,
        format: mjs ? 'esm' : 'cjs',
        sourcemap: 'inline',
        metafile: true,
        plugins: [
            {
                name: 'externalize-deps',
                setup(build) {
                    build.onResolve({ filter: /.*/ }, (args) => {
                        const id = args.path;
                        if (id[0] !== '.' && !path_1.default.isAbsolute(id)) {
                            return {
                                external: true
                            };
                        }
                    });
                }
            },
            {
                name: 'replace-import-meta',
                setup(build) {
                    build.onLoad({ filter: /\.[jt]s$/ }, async (args) => {
                        const contents = await fs_extra_1.default.readFile(args.path, 'utf8');
                        return {
                            loader: args.path.endsWith('.ts') ? 'ts' : 'js',
                            contents: contents
                                .replace(/\bimport\.meta\.url\b/g, JSON.stringify(`file://${args.path}`))
                                .replace(/\b__dirname\b/g, JSON.stringify(path_1.default.dirname(args.path)))
                                .replace(/\b__filename\b/g, JSON.stringify(args.path))
                        };
                    });
                }
            }
        ]
    });
    const { text } = result.outputFiles[0];
    return text;
}
exports.bundleMjsOrTsFile = bundleMjsOrTsFile;
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