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26944e159d
swc_ecma_transforms_base: - Reimplement `hygiene`.
56 lines
1.9 KiB
TypeScript
56 lines
1.9 KiB
TypeScript
"use strict";
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function _applyDecoratedDescriptor(target, property, decorators, descriptor, context) {
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var desc = {
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};
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Object.keys(descriptor).forEach(function(key) {
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desc[key] = descriptor[key];
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});
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desc.enumerable = !!desc.enumerable;
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desc.configurable = !!desc.configurable;
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if ("value" in desc || desc.initializer) {
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desc.writable = true;
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}
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desc = decorators.slice().reverse().reduce(function(desc, decorator) {
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return decorator ? decorator(target, property, desc) || desc : desc;
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}, desc);
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if (context && desc.initializer !== void 0) {
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desc.value = desc.initializer ? desc.initializer.call(context) : void 0;
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desc.initializer = undefined;
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}
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if (desc.initializer === void 0) {
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Object.defineProperty(target, property, desc);
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desc = null;
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}
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return desc;
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}
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function _initializerDefineProperty(target, property, descriptor, context) {
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if (!descriptor) return;
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Object.defineProperty(target, property, {
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enumerable: descriptor.enumerable,
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configurable: descriptor.configurable,
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writable: descriptor.writable,
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value: descriptor.initializer ? descriptor.initializer.call(context) : void 0
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});
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}
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var _class, _descriptor, _dec, _dec1;
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function MyDecorator(klass) {
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return ()=>{
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// do something
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console.log(klass);
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};
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}
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let MyClass = ((_class = class MyClass {
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constructor(){
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_initializerDefineProperty(this, "prop", _descriptor, this);
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}
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}) || _class, _dec = MyDecorator(_class), _dec1 = typeof Reflect !== "undefined" && typeof Reflect.metadata === "function" && Reflect.metadata("design:type", String), _descriptor = _applyDecoratedDescriptor(_class.prototype, "prop", [
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_dec,
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_dec1
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], {
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configurable: true,
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enumerable: true,
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writable: true,
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initializer: void 0
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}), _class);
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console.log(new MyClass());
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