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Diffstat (limited to 'deps/npm/node_modules/libnpx/node_modules/yargs/node_modules/read-pkg-up/node_modules/find-up/node_modules/locate-path/node_modules/p-locate/node_modules/p-limit/index.js')
-rw-r--r--deps/npm/node_modules/libnpx/node_modules/yargs/node_modules/read-pkg-up/node_modules/find-up/node_modules/locate-path/node_modules/p-locate/node_modules/p-limit/index.js40
1 files changed, 40 insertions, 0 deletions
diff --git a/deps/npm/node_modules/libnpx/node_modules/yargs/node_modules/read-pkg-up/node_modules/find-up/node_modules/locate-path/node_modules/p-locate/node_modules/p-limit/index.js b/deps/npm/node_modules/libnpx/node_modules/yargs/node_modules/read-pkg-up/node_modules/find-up/node_modules/locate-path/node_modules/p-locate/node_modules/p-limit/index.js
new file mode 100644
index 0000000000..bfafd2688a
--- /dev/null
+++ b/deps/npm/node_modules/libnpx/node_modules/yargs/node_modules/read-pkg-up/node_modules/find-up/node_modules/locate-path/node_modules/p-locate/node_modules/p-limit/index.js
@@ -0,0 +1,40 @@
+'use strict';
+module.exports = concurrency => {
+ if (concurrency < 1) {
+ throw new TypeError('Expected `concurrency` to be a number from 1 and up');
+ }
+
+ const queue = [];
+ let activeCount = 0;
+
+ const next = () => {
+ activeCount--;
+
+ if (queue.length > 0) {
+ queue.shift()();
+ }
+ };
+
+ return fn => new Promise((resolve, reject) => {
+ const run = () => {
+ activeCount++;
+
+ fn().then(
+ val => {
+ resolve(val);
+ next();
+ },
+ err => {
+ reject(err);
+ next();
+ }
+ );
+ };
+
+ if (activeCount < concurrency) {
+ run();
+ } else {
+ queue.push(run);
+ }
+ });
+};