@vercel/fun/dist/src/runtimes/go1.x/index.js

Local Lambda development environment

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.init = init;
const node_path_1 = require("node:path");
const tinyexec_1 = require("tinyexec");
const debug_1 = __importDefault(require("debug"));
const promises_1 = require("node:fs/promises");
const filename_1 = require("./filename");
const debug = (0, debug_1.default)('@vercel/fun:runtimes/go1.x');
function _go(opts) {
    return function go(...args) {
        debug('Exec %o', `go ${args.join(' ')}`);
        return (0, tinyexec_1.exec)('go', args, { stdio: 'inherit', ...opts });
    };
}
async function init({ cacheDir }) {
    const source = (0, node_path_1.join)(cacheDir, 'bootstrap.go');
    const out = (0, filename_1.getOutputFile)();
    let data = await (0, promises_1.readFile)(source, 'utf8');
    // Fix windows
    if (process.platform === 'win32') {
        debug('detected windows, so stripping Setpgid');
        data = data
            .split('\n')
            .filter(line => !line.includes('Setpgid'))
            .join('\n');
    }
    // Prepare a temporary `$GOPATH`
    const GOPATH = (0, node_path_1.join)(cacheDir, 'go');
    // The source code must reside in `$GOPATH/src` for `go get` to work
    const bootstrapDir = (0, node_path_1.join)(GOPATH, 'src', out);
    await (0, promises_1.mkdir)(bootstrapDir, { recursive: true });
    await (0, promises_1.writeFile)((0, node_path_1.join)(bootstrapDir, 'bootstrap.go'), data);
    const go = _go({ cwd: bootstrapDir, env: { ...process.env, GOPATH } });
    const bootstrap = (0, node_path_1.join)(cacheDir, out);
    debug('Compiling Go runtime binary %o -> %o', source, bootstrap);
    await go('get');
    await go('build', '-o', bootstrap, 'bootstrap.go');
    // Clean up `$GOPATH` from the cacheDir
    await (0, promises_1.rm)(GOPATH, { recursive: true });
}
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