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-rw-r--r--node_modules/define-properties/index.js47
1 files changed, 47 insertions, 0 deletions
diff --git a/node_modules/define-properties/index.js b/node_modules/define-properties/index.js
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+++ b/node_modules/define-properties/index.js
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+'use strict';
+
+var keys = require('object-keys');
+var hasSymbols = typeof Symbol === 'function' && typeof Symbol('foo') === 'symbol';
+
+var toStr = Object.prototype.toString;
+var concat = Array.prototype.concat;
+var origDefineProperty = Object.defineProperty;
+
+var isFunction = function (fn) {
+ return typeof fn === 'function' && toStr.call(fn) === '[object Function]';
+};
+
+var hasPropertyDescriptors = require('has-property-descriptors')();
+
+var supportsDescriptors = origDefineProperty && hasPropertyDescriptors;
+
+var defineProperty = function (object, name, value, predicate) {
+ if (name in object && (!isFunction(predicate) || !predicate())) {
+ return;
+ }
+ if (supportsDescriptors) {
+ origDefineProperty(object, name, {
+ configurable: true,
+ enumerable: false,
+ value: value,
+ writable: true
+ });
+ } else {
+ object[name] = value; // eslint-disable-line no-param-reassign
+ }
+};
+
+var defineProperties = function (object, map) {
+ var predicates = arguments.length > 2 ? arguments[2] : {};
+ var props = keys(map);
+ if (hasSymbols) {
+ props = concat.call(props, Object.getOwnPropertySymbols(map));
+ }
+ for (var i = 0; i < props.length; i += 1) {
+ defineProperty(object, props[i], map[props[i]], predicates[props[i]]);
+ }
+};
+
+defineProperties.supportsDescriptors = !!supportsDescriptors;
+
+module.exports = defineProperties;