@mic-rexjs/usecases/es/methods/isGenerator/index.js

Usecases of Clean Architecture

export const isGenerator = (target, typeSymbol) => {
    const symbols = typeSymbol ? [typeSymbol] : [Symbol.iterator, Symbol.asyncIterator];
    for (const key of symbols) {
        const iterator = target?.[key];
        if (typeof iterator !== 'function') {
            continue;
        }
        const generator = iterator.call(target);
        // 判断 `iterator` 返回的 `generator` 是否为自身，这是 `generator` 的特性
        if (generator === target) {
            return true;
        }
    }
    return false;
};