cuelang-js/build/index.js

CUE for node.js & browser

"use strict";
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
    return new (P || (P = Promise))(function (resolve, reject) {
        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
        step((generator = generator.apply(thisArg, _arguments || [])).next());
    });
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.isBrowser = exports.memfs = void 0;
const path = require("path");
require("./wasm_exec");
const nodefs = require("fs");
const memfs_1 = require("memfs");
Object.defineProperty(exports, "memfs", { enumerable: true, get: function () { return memfs_1.fs; } });
let moduleCache = null;
exports.isBrowser = typeof window !== 'undefined' && typeof window.document !== 'undefined';
if (exports.isBrowser) {
    global.fs = memfs_1.fs;
}
global.stdout = '';
global.stderr = '';
global.fs = new Proxy(global.fs, {
    get: function (target, property) {
        switch (property) {
            case 'constants':
                if (exports.isBrowser) {
                    return {
                        O_WRONLY: -1,
                        O_RDWR: -1,
                        O_CREAT: -1,
                        O_TRUNC: -1,
                        O_APPEND: -1,
                        O_EXCL: -1,
                    };
                }
                else {
                    return target[property];
                }
            case 'stat':
                return (path, flags, mode, callback) => {
                    if (exports.isBrowser && path === '.') {
                        path = '/';
                    }
                    return target[property](path, flags, mode, callback);
                };
                break;
            case 'open':
                return (filename, flags, mode, callback) => {
                    return target[property](filename, flags, mode, callback);
                };
                break;
            case 'writeSync':
                return (fd, buf) => {
                    const decoder = new TextDecoder('utf-8');
                    if (fd === 1) {
                        global.stdout += decoder.decode(buf);
                        return buf.length;
                    }
                    else if (fd === 2) {
                        global.stderr += decoder.decode(buf);
                        return buf.length;
                    }
                    else {
                        return target[property](fd, buf);
                    }
                };
                break;
            case 'write':
                return (fd, buf, _offset, _length, _position, callback) => {
                    const n = global.fs.writeSync(fd, buf);
                    callback(null, n);
                };
            default:
                return target[property];
        }
    }
});
function default_1(command, args = [], flags = {}) {
    return __awaiter(this, void 0, void 0, function* () {
        if (!moduleCache && globalThis.require) {
            moduleCache = yield WebAssembly.compile(nodefs.readFileSync(path.join(__dirname, 'cue.wasm')));
        }
        else if (!moduleCache) {
            moduleCache = yield WebAssembly.compileStreaming(fetch('cue.wasm'));
        }
        const go = new Go();
        const instance = yield WebAssembly.instantiate(moduleCache, go.importObject);
        const flagList = Object.keys(flags).map((key) => {
            if (flags[key] === true) {
                return key;
            }
            else {
                return `${key}=${flags[key]}`;
            }
        });
        go.argv = [__filename, command, ...args, ...flagList];
        go.env = {
            PWD: '/',
        };
        let code = -1;
        go.exit = (exitCode) => {
            code = exitCode;
        };
        try {
            yield go.run(instance);
            return { code, stdout: global.stdout, stderr: global.stderr };
        }
        finally {
            global.stdout = '';
            global.stderr = '';
        }
    });
}
exports.default = default_1;
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