simple-squiggle

A restricted subset of Squiggle
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set.js (1240B)

      1 import superPropBase from "./superPropBase.js";
      2 import defineProperty from "./defineProperty.js";
      3 
      4 function set(target, property, value, receiver) {
      5   if (typeof Reflect !== "undefined" && Reflect.set) {
      6     set = Reflect.set;
      7   } else {
      8     set = function set(target, property, value, receiver) {
      9       var base = superPropBase(target, property);
     10       var desc;
     11 
     12       if (base) {
     13         desc = Object.getOwnPropertyDescriptor(base, property);
     14 
     15         if (desc.set) {
     16           desc.set.call(receiver, value);
     17           return true;
     18         } else if (!desc.writable) {
     19           return false;
     20         }
     21       }
     22 
     23       desc = Object.getOwnPropertyDescriptor(receiver, property);
     24 
     25       if (desc) {
     26         if (!desc.writable) {
     27           return false;
     28         }
     29 
     30         desc.value = value;
     31         Object.defineProperty(receiver, property, desc);
     32       } else {
     33         defineProperty(receiver, property, value);
     34       }
     35 
     36       return true;
     37     };
     38   }
     39 
     40   return set(target, property, value, receiver);
     41 }
     42 
     43 export default function _set(target, property, value, receiver, isStrict) {
     44   var s = set(target, property, value, receiver || target);
     45 
     46   if (!s && isStrict) {
     47     throw new Error('failed to set property');
     48   }
     49 
     50   return value;
     51 }