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-rw-r--r--node_modules/execa/lib/stdio.js41
1 files changed, 41 insertions, 0 deletions
diff --git a/node_modules/execa/lib/stdio.js b/node_modules/execa/lib/stdio.js
new file mode 100644
index 0000000..a82d468
--- /dev/null
+++ b/node_modules/execa/lib/stdio.js
@@ -0,0 +1,41 @@
+'use strict';
+const alias = ['stdin', 'stdout', 'stderr'];
+
+const hasAlias = opts => alias.some(x => Boolean(opts[x]));
+
+module.exports = opts => {
+ if (!opts) {
+ return null;
+ }
+
+ if (opts.stdio && hasAlias(opts)) {
+ throw new Error(`It's not possible to provide \`stdio\` in combination with one of ${alias.map(x => `\`${x}\``).join(', ')}`);
+ }
+
+ if (typeof opts.stdio === 'string') {
+ return opts.stdio;
+ }
+
+ const stdio = opts.stdio || [];
+
+ if (!Array.isArray(stdio)) {
+ throw new TypeError(`Expected \`stdio\` to be of type \`string\` or \`Array\`, got \`${typeof stdio}\``);
+ }
+
+ const result = [];
+ const len = Math.max(stdio.length, alias.length);
+
+ for (let i = 0; i < len; i++) {
+ let value = null;
+
+ if (stdio[i] !== undefined) {
+ value = stdio[i];
+ } else if (opts[alias[i]] !== undefined) {
+ value = opts[alias[i]];
+ }
+
+ result[i] = value;
+ }
+
+ return result;
+};