vue-di-container/dist/util.js

Dependency injection container for Vue

export function decorator(decorate) {
    return (target, propName, indexOrProp) => {
        if (decorate.class &&
            typeof target === 'function' &&
            propName === undefined &&
            indexOrProp === undefined) {
            return decorate.class(target);
        }
        if (decorate.property &&
            typeof target === 'object' &&
            (typeof propName === 'string' || typeof propName === 'symbol') &&
            indexOrProp === undefined) {
            return decorate.property((target.constructor || target), propName);
        }
        if (decorate.method &&
            typeof target === 'object' &&
            (typeof propName === 'string' || typeof propName === 'symbol') &&
            typeof indexOrProp === 'object') {
            return decorate.method((target.constructor || target), propName, indexOrProp);
        }
        if (decorate.parameter &&
            typeof target === 'object' &&
            (typeof propName === 'string' || typeof propName === 'symbol') &&
            typeof indexOrProp === 'number') {
            return decorate.parameter((target.constructor || target), propName, indexOrProp);
        }
        if (decorate.ctorParameter &&
            typeof target === 'function' &&
            propName === undefined &&
            typeof indexOrProp === 'number') {
            return decorate.ctorParameter(target, indexOrProp);
        }
        if (decorate.else) {
            decorate.else();
        }
    };
}