gluegun
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A delightful toolkit for building Node-powered CLIs.
161 lines • 7.41 kB
JavaScript
;
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());
});
};
var __generator = (this && this.__generator) || function (thisArg, body) {
var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
function verb(n) { return function (v) { return step([n, v]); }; }
function step(op) {
if (f) throw new TypeError("Generator is already executing.");
while (_) try {
if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
if (y = 0, t) op = [op[0] & 2, t.value];
switch (op[0]) {
case 0: case 1: t = op; break;
case 4: _.label++; return { value: op[1], done: false };
case 5: _.label++; y = op[1]; op = [0]; continue;
case 7: op = _.ops.pop(); _.trys.pop(); continue;
default:
if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
if (t[2]) _.ops.pop();
_.trys.pop(); continue;
}
op = body.call(thisArg, _);
} catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
}
};
var __rest = (this && this.__rest) || function (s, e) {
var t = {};
for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
t[p] = s[p];
if (s != null && typeof Object.getOwnPropertySymbols === "function")
for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
t[p[i]] = s[p[i]];
}
return t;
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.system = void 0;
var utils_1 = require("./utils");
/**
* Executes a commandline program asynchronously.
*
* @param commandLine The command line to execute.
* @param options Additional child_process options for node.
* @returns Promise with result.
*/
function run(commandLine, options) {
if (options === void 0) { options = {}; }
return __awaiter(this, void 0, void 0, function () {
var trimmer, trim, nodeOptions;
return __generator(this, function (_a) {
trimmer = options && options.trim ? function (s) { return s.trim(); } : function (s) { return s; };
trim = options.trim, nodeOptions = __rest(options, ["trim"]);
return [2 /*return*/, new Promise(function (resolve, reject) {
var exec = require('child_process').exec;
exec(commandLine, nodeOptions, function (error, stdout, stderr) {
if (error) {
error.stdout = stdout;
error.stderr = stderr;
return reject(error);
}
resolve(trimmer(stdout || ''));
});
})];
});
});
}
/**
* Executes a commandline via execa.
*
* @param commandLine The command line to execute.
* @param options Additional child_process options for node.
* @returns Promise with result.
*/
function exec(commandLine, options) {
if (options === void 0) { options = {}; }
return __awaiter(this, void 0, void 0, function () {
return __generator(this, function (_a) {
return [2 /*return*/, new Promise(function (resolve, reject) {
var args = commandLine.split(' ');
require('execa')((0, utils_1.head)(args), (0, utils_1.tail)(args), options)
.then(function (result) { return resolve(result.stdout); })
.catch(function (error) { return reject(error); });
})];
});
});
}
/**
* Uses cross-spawn to run a process.
*
* @param commandLine The command line to execute.
* @param options Additional child_process options for node.
* @returns The response code.
*/
function spawn(commandLine, options) {
if (options === void 0) { options = {}; }
return __awaiter(this, void 0, void 0, function () {
return __generator(this, function (_a) {
return [2 /*return*/, new Promise(function (resolve, _reject) {
var args = commandLine.split(' ');
var spawned = require('cross-spawn')((0, utils_1.head)(args), (0, utils_1.tail)(args), options);
var result = {
stdout: null,
status: null,
error: null,
};
if (spawned.stdout) {
spawned.stdout.on('data', function (data) {
if ((0, utils_1.isNil)(result.stdout)) {
result.stdout = data;
}
else {
result.stdout += data;
}
});
}
spawned.on('close', function (code) {
result.status = code;
resolve(result);
});
spawned.on('error', function (err) {
result.error = err;
resolve(result);
});
})];
});
});
}
/**
* Finds the location of the path.
*
* @param command The name of program you're looking for.
* @return The full path or null.
*/
function which(command) {
return require('which').sync(command, { nothrow: true });
}
/**
* Starts a timer used for measuring durations.
*
* @return A function that when called will return the elapsed duration in milliseconds.
*/
function startTimer() {
var started = process.uptime();
return function () { return Math.floor((process.uptime() - started) * 1000); }; // uptime gives us seconds
}
var system = { exec: exec, run: run, spawn: spawn, which: which, startTimer: startTimer };
exports.system = system;
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