source: trip-planner-front/node_modules/execa/lib/stdio.js@ 571e0df

Last change on this file since 571e0df was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago

initial commit

  • Property mode set to 100644
File size: 891 bytes
Line 
1'use strict';
2const alias = ['stdin', 'stdout', 'stderr'];
3
4const hasAlias = opts => alias.some(x => Boolean(opts[x]));
5
6module.exports = opts => {
7 if (!opts) {
8 return null;
9 }
10
11 if (opts.stdio && hasAlias(opts)) {
12 throw new Error(`It's not possible to provide \`stdio\` in combination with one of ${alias.map(x => `\`${x}\``).join(', ')}`);
13 }
14
15 if (typeof opts.stdio === 'string') {
16 return opts.stdio;
17 }
18
19 const stdio = opts.stdio || [];
20
21 if (!Array.isArray(stdio)) {
22 throw new TypeError(`Expected \`stdio\` to be of type \`string\` or \`Array\`, got \`${typeof stdio}\``);
23 }
24
25 const result = [];
26 const len = Math.max(stdio.length, alias.length);
27
28 for (let i = 0; i < len; i++) {
29 let value = null;
30
31 if (stdio[i] !== undefined) {
32 value = stdio[i];
33 } else if (opts[alias[i]] !== undefined) {
34 value = opts[alias[i]];
35 }
36
37 result[i] = value;
38 }
39
40 return result;
41};
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