@canlooks/ajax/dist/esm/util.js

A private tool

/**
 * 查找请求体中的Blob对象
 * @param body
 */
export function findBodyFiles(body) {
    if (body instanceof Blob) {
        return body;
    }
    if (typeof body === 'object' && body !== null) {
        for (const k in body) {
            const file = findBodyFiles(body[k]);
            if (file) {
                return file;
            }
        }
    }
    return;
}
/**
 * 合并配置
 * @param config
 */
export function mergeConfig(...config) {
    return config.reduce((prev, next) => {
        return {
            ...prev,
            ...next,
            url: mergeUrl(prev.url, next.url),
            params: mergeParams(prev.params, next.params),
            headers: mergeHeaders(prev.headers, next.headers),
            signal: mergeSignal(prev.signal, next.signal)
        };
    });
    function mergeUrl(prev, next) {
        if (prev instanceof URL) {
            prev = prev.href;
        }
        if (next instanceof URL) {
            next = next.href;
        }
        if (!prev) {
            return next;
        }
        if (!next) {
            return prev;
        }
        if (/^([a-z]+:)?\/\//i.test(next)) {
            return next;
        }
        prev = prev.replace(/\/+$/, '');
        next = next.replace(/^\/+/, '');
        return `${prev}/${next}`;
    }
    function mergeParams(prev, next) {
        const params = new URLSearchParams(prev);
        if (!(next instanceof URLSearchParams)) {
            next = new URLSearchParams(next);
        }
        if (!prev) {
            return next;
        }
        if (!next) {
            return params;
        }
        for (const [name, value] of next) {
            params.set(name, value);
        }
        return params;
    }
    function mergeHeaders(prev, next) {
        const headers = new Headers(prev);
        if (!(next instanceof Headers)) {
            next = new Headers(next);
        }
        if (!prev) {
            return next;
        }
        if (!next) {
            return headers;
        }
        for (const [name, value] of next) {
            headers.set(name, value);
        }
        return headers;
    }
    function mergeSignal(prev, next) {
        if (!prev) {
            return next;
        }
        if (!next) {
            return prev;
        }
        const abortController = new AbortController();
        prev.onabort = next.onabort = () => abortController.abort();
        return abortController.signal;
    }
}