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[dotfiles/.git] / .config / coc / extensions / node_modules / coc-prettier / node_modules / array-uniq / index.js

diff --git a/.config/coc/extensions/node_modules/coc-prettier/node_modules/array-uniq/index.js b/.config/coc/extensions/node_modules/coc-prettier/node_modules/array-uniq/index.js
new file mode 100644 (file)
index 0000000..edd09f8
--- /dev/null
+++ b/.config/coc/extensions/node_modules/coc-prettier/node_modules/array-uniq/index.js
@@ -0,0 +1,62 @@
+'use strict';
+
+// there's 3 implementations written in increasing order of efficiency
+
+// 1 - no Set type is defined
+function uniqNoSet(arr) {
+       var ret = [];
+
+       for (var i = 0; i < arr.length; i++) {
+               if (ret.indexOf(arr[i]) === -1) {
+                       ret.push(arr[i]);
+               }
+       }
+
+       return ret;
+}
+
+// 2 - a simple Set type is defined
+function uniqSet(arr) {
+       var seen = new Set();
+       return arr.filter(function (el) {
+               if (!seen.has(el)) {
+                       seen.add(el);
+                       return true;
+               }
+
+               return false;
+       });
+}
+
+// 3 - a standard Set type is defined and it has a forEach method
+function uniqSetWithForEach(arr) {
+       var ret = [];
+
+       (new Set(arr)).forEach(function (el) {
+               ret.push(el);
+       });
+
+       return ret;
+}
+
+// V8 currently has a broken implementation
+// https://github.com/joyent/node/issues/8449
+function doesForEachActuallyWork() {
+       var ret = false;
+
+       (new Set([true])).forEach(function (el) {
+               ret = el;
+       });
+
+       return ret === true;
+}
+
+if ('Set' in global) {
+       if (typeof Set.prototype.forEach === 'function' && doesForEachActuallyWork()) {
+               module.exports = uniqSetWithForEach;
+       } else {
+               module.exports = uniqSet;
+       }
+} else {
+       module.exports = uniqNoSet;
+}