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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 | 5x 5x 5x 30x 30x 30x 30x 30x 30x 22x 22x 30x 30x 30x | import "reflect-metadata";
import { Keys } from "../Keys";
import { Type } from "../interfaces/IType";
/*
* Save meta for constructor parameter or function parameter
* */
export function Inject<T = any>(propertyKey?: string | Type<T>) {
return (
target: any,
key: string | symbol,
parameterIndex: number
) => {
const ctrOrTarget = key ? target.constructor : target;
const metaKey = key ? key : Keys.INJECT_PROPERTY_DECORATOR_KEY;
const reqParamCount = target[key]?.length || target?.length;
const metadata: any = Reflect.getMetadata(metaKey, ctrOrTarget) || {};
if (metadata[metaKey] === undefined) {
metadata[metaKey] = [];
metadata[Keys.IS_REQUIRED_PARAM] = [];
}
const param: IInjectParamMeta = {key: propertyKey, isRequired: (parameterIndex < reqParamCount), index: parameterIndex};
// @ts-ignore
metadata[metaKey][parameterIndex] = param;
Reflect.defineMetadata(metaKey, metadata, ctrOrTarget);
};
}
export interface IInjectParamMeta {
key: any;
isRequired: boolean;
index: number;
}
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