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Sat, Feb 15, 08:53

index.js
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/**
* @fileoverview Main entrypoint for libraries using yargs-parser in Node.js
* CJS and ESM environments.
*
* @license
* Copyright (c) 2016, Contributors
* SPDX-License-Identifier: ISC
*/
import { format } from 'util';
import { readFileSync } from 'fs';
import { normalize, resolve } from 'path';
import { camelCase, decamelize, looksLikeNumber } from './string-utils.js';
import { YargsParser } from './yargs-parser.js';
// See https://github.com/yargs/yargs-parser#supported-nodejs-versions for our
// version support policy. The YARGS_MIN_NODE_VERSION is used for testing only.
const minNodeVersion = (process && process.env && process.env.YARGS_MIN_NODE_VERSION)
? Number(process.env.YARGS_MIN_NODE_VERSION)
: 10;
if (process && process.version) {
const major = Number(process.version.match(/v([^.]+)/)[1]);
if (major < minNodeVersion) {
throw Error(`yargs parser supports a minimum Node.js version of ${minNodeVersion}. Read our version support policy: https://github.com/yargs/yargs-parser#supported-nodejs-versions`);
}
}
// Creates a yargs-parser instance using Node.js standard libraries:
const env = process ? process.env : {};
const parser = new YargsParser({
cwd: process.cwd,
env: () => {
return env;
},
format,
normalize,
resolve,
// TODO: figure out a way to combine ESM and CJS coverage, such that
// we can exercise all the lines below:
require: (path) => {
if (typeof require !== 'undefined') {
return require(path);
}
else if (path.match(/\.json$/)) {
return readFileSync(path, 'utf8');
}
else {
throw Error('only .json config files are supported in ESM');
}
}
});
const yargsParser = function Parser(args, opts) {
const result = parser.parse(args.slice(), opts);
return result.argv;
};
yargsParser.detailed = function (args, opts) {
return parser.parse(args.slice(), opts);
};
yargsParser.camelCase = camelCase;
yargsParser.decamelize = decamelize;
yargsParser.looksLikeNumber = looksLikeNumber;
export default yargsParser;

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