clone-class/dist/cjs/src/interface-of-class.js

Clone an ES6 Class as Another Class Name for Isolating Class Static Properties.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.interfaceOfClass = void 0;
const interfaceOfClass = (Klass) => {
    /**
     * Get properties of a class
     * @see https://stackoverflow.com/a/40637896/1123955
     */
    /**
     * Huan(202110): we decide not to check the instance properties
     *  because the instance properties are not always the same as the class properties
     */
    // const instance = new Klass()
    // const instanceProperties = Object.getOwnPropertyNames(instance)
    const propertySet = new Set();
    let currentPrototype = Klass.prototype;
    while (currentPrototype && currentPrototype !== Object.prototype) {
        Object
            .getOwnPropertyNames(currentPrototype)
            .filter(property => property !== 'constructor') // ignore `constructor`
            .filter(property => !property.startsWith('_')) // ignore property names starting with `_`
            .forEach(prop => propertySet.add(prop));
        currentPrototype = Object.getPrototypeOf(currentPrototype);
    }
    // console.info('propertySet:', propertySet)
    if (propertySet.size === 0) {
        throw new Error(`${Klass.name} has no prototype properties`);
    }
    return () => (target) => {
        if (target instanceof Object) {
            return [...propertySet]
                .every(prop => prop in target);
        }
        return false;
    };
};
exports.interfaceOfClass = interfaceOfClass;
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