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setup-node/node_modules/execa/lib/errname.js
2019-08-05 15:18:52 -04:00

39 lines
841 B
JavaScript

'use strict';
// Older verions of Node.js might not have `util.getSystemErrorName()`.
// In that case, fall back to a deprecated internal.
const util = require('util');
let uv;
if (typeof util.getSystemErrorName === 'function') {
module.exports = util.getSystemErrorName;
} else {
try {
uv = process.binding('uv');
if (typeof uv.errname !== 'function') {
throw new TypeError('uv.errname is not a function');
}
} catch (err) {
console.error('execa/lib/errname: unable to establish process.binding(\'uv\')', err);
uv = null;
}
module.exports = code => errname(uv, code);
}
// Used for testing the fallback behavior
module.exports.__test__ = errname;
function errname(uv, code) {
if (uv) {
return uv.errname(code);
}
if (!(code < 0)) {
throw new Error('err >= 0');
}
return `Unknown system error ${code}`;
}