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on this file since 6a3a178 was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago |
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[6a3a178] | 1 | 'use strict';
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| 2 | // classic singleton yargs API, to use yargs
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| 3 | // without running as a singleton do:
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| 4 | // require('yargs/yargs')(process.argv.slice(2))
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| 5 | const {Yargs, processArgv} = require('./build/index.cjs');
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| 6 |
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| 7 | Argv(processArgv.hideBin(process.argv));
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| 8 |
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| 9 | module.exports = Argv;
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| 10 |
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| 11 | function Argv(processArgs, cwd) {
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| 12 | const argv = Yargs(processArgs, cwd, require);
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| 13 | singletonify(argv);
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| 14 | // TODO(bcoe): warn if argv.parse() or argv.argv is used directly.
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| 15 | return argv;
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| 16 | }
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| 17 |
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| 18 | /* Hack an instance of Argv with process.argv into Argv
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| 19 | so people can do
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| 20 | require('yargs')(['--beeble=1','-z','zizzle']).argv
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| 21 | to parse a list of args and
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| 22 | require('yargs').argv
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| 23 | to get a parsed version of process.argv.
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| 24 | */
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| 25 | function singletonify(inst) {
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| 26 | [
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| 27 | ...Object.keys(inst),
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| 28 | ...Object.getOwnPropertyNames(inst.constructor.prototype),
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| 29 | ].forEach(key => {
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| 30 | if (key === 'argv') {
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| 31 | Argv.__defineGetter__(key, inst.__lookupGetter__(key));
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| 32 | } else if (typeof inst[key] === 'function') {
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| 33 | Argv[key] = inst[key].bind(inst);
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| 34 | } else {
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| 35 | Argv.__defineGetter__('$0', () => {
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| 36 | return inst.$0;
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| 37 | });
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| 38 | Argv.__defineGetter__('parsed', () => {
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| 39 | return inst.parsed;
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| 40 | });
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| 41 | }
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| 42 | });
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| 43 | }
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