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Add support for __esDecorate and related helpers (#193)
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rbuckton committed Jan 20, 2023
1 parent 3bdc002 commit 62c5322
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Showing 4 changed files with 138 additions and 0 deletions.
8 changes: 8 additions & 0 deletions modules/index.js
Expand Up @@ -5,6 +5,10 @@ const {
__rest,
__decorate,
__param,
__esDecorate,
__runInitializers,
__propKey,
__setFunctionName,
__metadata,
__awaiter,
__generator,
Expand Down Expand Up @@ -32,6 +36,10 @@ export {
__rest,
__decorate,
__param,
__esDecorate,
__runInitializers,
__propKey,
__setFunctionName,
__metadata,
__awaiter,
__generator,
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32 changes: 32 additions & 0 deletions tslib.d.ts
Expand Up @@ -58,6 +58,38 @@ export declare function __decorate(decorators: Function[], target: any, key?: st
*/
export declare function __param(paramIndex: number, decorator: Function): Function;

/**
* Applies decorators to a class or class member, following the native ECMAScript decorator specification.
* @param ctor For non-field class members, the class constructor. Otherwise, `null`.
* @param descriptorIn The `PropertyDescriptor` to use when unable to look up the property from `ctor`.
* @param decorators The decorators to apply
* @param contextIn The `DecoratorContext` to clone for each decorator application.
* @param initializers An array of field initializer mutation functions into which new initializers are written.
* @param extraInitializers An array of extra initializer functions into which new initializers are written.
*/
export declare function __esDecorate(ctor: Function | null, descriptorIn: object | null, decorators: Function[], contextIn: object, initializers: Function[] | null, extraInitializers: Function[]): void;

/**
* Runs field initializers or extra initializers generated by `__esDecorate`.
* @param thisArg The `this` argument to use.
* @param initializers The array of initializers to evaluate.
* @param value The initial value to pass to the initializers.
*/
export declare function __runInitializers(thisArg: unknown, initializers: Function[], value?: any): any;

/**
* Converts a computed property name into a `string` or `symbol` value.
*/
export declare function __propKey(x: any): string | symbol;

/**
* Assigns the name of a function derived from the left-hand side of an assignment.
* @param f The function to rename.
* @param name The new name for the function.
* @param prefix A prefix (such as `"get"` or `"set"`) to insert before the name.
*/
export declare function __setFunctionName(f: Function, name: string | symbol, prefix?: string): Function;

/**
* Creates a decorator that sets metadata.
*
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45 changes: 45 additions & 0 deletions tslib.es6.js
Expand Up @@ -63,6 +63,51 @@ export function __param(paramIndex, decorator) {
return function (target, key) { decorator(target, key, paramIndex); }
}

export function __esDecorate(ctor, descriptorIn, decorators, contextIn, initializers, extraInitializers) {
function accept(f) { if (f !== void 0 && typeof f !== "function") throw new TypeError("Function expected"); return f; }
var kind = contextIn.kind, key = kind === "getter" ? "get" : kind === "setter" ? "set" : "value";
var target = !descriptorIn && ctor ? contextIn["static"] ? ctor : ctor.prototype : null;
var descriptor = descriptorIn || (target ? Object.getOwnPropertyDescriptor(target, contextIn.name) : {});
var _, done = false;
for (var i = decorators.length - 1; i >= 0; i--) {
var context = {};
for (var p in contextIn) context[p] = p === "access" ? {} : contextIn[p];
for (var p in contextIn.access) context.access[p] = contextIn.access[p];
context.addInitializer = function (f) { if (done) throw new TypeError("Cannot add initializers after decoration has completed"); extraInitializers.push(accept(f || null)); };
var result = (0, decorators[i])(kind === "accessor" ? { get: descriptor.get, set: descriptor.set } : descriptor[key], context);
if (kind === "accessor") {
if (result === void 0) continue;
if (result === null || typeof result !== "object") throw new TypeError("Object expected");
if (_ = accept(result.get)) descriptor.get = _;
if (_ = accept(result.set)) descriptor.set = _;
if (_ = accept(result.init)) initializers.push(_);
}
else if (_ = accept(result)) {
if (kind === "field") initializers.push(_);
else descriptor[key] = _;
}
}
if (target) Object.defineProperty(target, contextIn.name, descriptor);
done = true;
};

export function __runInitializers(thisArg, initializers, value) {
var useValue = arguments.length > 2;
for (var i = 0; i < initializers.length; i++) {
value = useValue ? initializers[i].call(thisArg, value) : initializers[i].call(thisArg);
}
return useValue ? value : void 0;
};

export function __propKey(x) {
return typeof x === "symbol" ? x : "".concat(x);
};

export function __setFunctionName(f, name, prefix) {
if (typeof name === "symbol") name = name.description ? "[".concat(name.description, "]") : "";
return Object.defineProperty(f, "name", { configurable: true, value: prefix ? "".concat(prefix, " ", name) : name });
};

export function __metadata(metadataKey, metadataValue) {
if (typeof Reflect === "object" && typeof Reflect.metadata === "function") return Reflect.metadata(metadataKey, metadataValue);
}
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53 changes: 53 additions & 0 deletions tslib.js
Expand Up @@ -18,6 +18,10 @@ var __assign;
var __rest;
var __decorate;
var __param;
var __esDecorate;
var __runInitializers;
var __propKey;
var __setFunctionName;
var __metadata;
var __awaiter;
var __generator;
Expand Down Expand Up @@ -105,6 +109,51 @@ var __createBinding;
return function (target, key) { decorator(target, key, paramIndex); }
};

__esDecorate = function (ctor, descriptorIn, decorators, contextIn, initializers, extraInitializers) {
function accept(f) { if (f !== void 0 && typeof f !== "function") throw new TypeError("Function expected"); return f; }
var kind = contextIn.kind, key = kind === "getter" ? "get" : kind === "setter" ? "set" : "value";
var target = !descriptorIn && ctor ? contextIn["static"] ? ctor : ctor.prototype : null;
var descriptor = descriptorIn || (target ? Object.getOwnPropertyDescriptor(target, contextIn.name) : {});
var _, done = false;
for (var i = decorators.length - 1; i >= 0; i--) {
var context = {};
for (var p in contextIn) context[p] = p === "access" ? {} : contextIn[p];
for (var p in contextIn.access) context.access[p] = contextIn.access[p];
context.addInitializer = function (f) { if (done) throw new TypeError("Cannot add initializers after decoration has completed"); extraInitializers.push(accept(f || null)); };
var result = (0, decorators[i])(kind === "accessor" ? { get: descriptor.get, set: descriptor.set } : descriptor[key], context);
if (kind === "accessor") {
if (result === void 0) continue;
if (result === null || typeof result !== "object") throw new TypeError("Object expected");
if (_ = accept(result.get)) descriptor.get = _;
if (_ = accept(result.set)) descriptor.set = _;
if (_ = accept(result.init)) initializers.push(_);
}
else if (_ = accept(result)) {
if (kind === "field") initializers.push(_);
else descriptor[key] = _;
}
}
if (target) Object.defineProperty(target, contextIn.name, descriptor);
done = true;
};

__runInitializers = function (thisArg, initializers, value) {
var useValue = arguments.length > 2;
for (var i = 0; i < initializers.length; i++) {
value = useValue ? initializers[i].call(thisArg, value) : initializers[i].call(thisArg);
}
return useValue ? value : void 0;
};

__propKey = function (x) {
return typeof x === "symbol" ? x : "".concat(x);
};

__setFunctionName = function (f, name, prefix) {
if (typeof name === "symbol") name = name.description ? "[".concat(name.description, "]") : "";
return Object.defineProperty(f, "name", { configurable: true, value: prefix ? "".concat(prefix, " ", name) : name });
};

__metadata = function (metadataKey, metadataValue) {
if (typeof Reflect === "object" && typeof Reflect.metadata === "function") return Reflect.metadata(metadataKey, metadataValue);
};
Expand Down Expand Up @@ -294,6 +343,10 @@ var __createBinding;
exporter("__rest", __rest);
exporter("__decorate", __decorate);
exporter("__param", __param);
exporter("__esDecorate", __esDecorate);
exporter("__runInitializers", __runInitializers);
exporter("__propKey", __propKey);
exporter("__setFunctionName", __setFunctionName);
exporter("__metadata", __metadata);
exporter("__awaiter", __awaiter);
exporter("__generator", __generator);
Expand Down

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