Function _injectScript

apps/background/monkey.js:383–428

(tabId, frameId, monkey)

};

const _injectScript = (tabId, frameId, monkey) => {
    let allFrames = !!monkey.mAllFrames;
    let world = monkey.mWorld === 'ISOLATED' ? 'ISOLATED' : 'MAIN';
    let finalCode = buildFinalCode(monkey);

    // 必须先等 ISOLATED 桥接器就位（MAIN/ISOLATED 模式都需要：
    // ISOLATED 模式下 user script 也通过 postMessage 走桥接，统一通道）。
    // 否则 user script 启动期的早期日志/@require 请求会丢失。
    let bridgeReady = _injectLogBridge(tabId, allFrames, frameId) || Promise.resolve();

    const exec = (worldOption, isFallback) => {
        try {
            chrome.scripting.executeScript({
                target: _buildTarget(tabId, allFrames, frameId),
                func: function (code) {
                    try { (0, eval)(code); } catch (e) {
                        // 注入阶段的 eval 错误也走桥接
                        try {
                            window.postMessage({
                                __fh_monkey_log: true,
                                payload: { level: 'error', msg: 'inject eval error: ' + ((e && e.stack) || e), time: Date.now() }
                            }, '*');
                        } catch (_) {}
                    }
                },
                args: [finalCode],
                world: worldOption,
                injectImmediately: true
            }).catch((err) => {
                if (!isFallback && worldOption === 'MAIN') {
                    exec('ISOLATED', true);
                } else {
                    // 最终失败也回报一条日志
                    log({
                        id: monkey.id, name: monkey.mName || '', level: 'error',
                        msg: 'inject failed: ' + ((err && err.message) || err),
                        url: '(tab ' + tabId + ', frame ' + (frameId || 0) + ')', time: Date.now()
                    });
                }
            });
        } catch (e) {
            if (!isFallback && worldOption === 'MAIN') exec('ISOLATED', true);
        }
    };
    bridgeReady.then(() => exec(world, false), () => exec(world, false));
};

const injectMonkey = (tabId, frameId, monkey) => {
    let allFrames = !!monkey.mAllFrames;