node_modules

node_modules/execa/lib/errname.js

@@ -0,0 +1,39 @@
+'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}`;
+}
+