v8.setFlagsFromString(flags)


    v8.setFlagsFromString() 方法可用于以编程方式设置 V8 命令行标志。 此方法需谨慎使用。 在虚拟机启动后更改设置可能会导致不可预测的行为,包括崩溃和数据丢失;或者它可能只是什么都不做。

    The v8.setFlagsFromString() method can be used to programmatically set V8 command-line flags. This method should be used with care. Changing settings after the VM has started may result in unpredictable behavior, including crashes and data loss; or it may simply do nothing.

    The V8 options available for a version of Node.js may be determined by running node --v8-options.

    Usage:

    // Print GC events to stdout for one minute.
    const v8 = require('node:v8');
    v8.setFlagsFromString('--trace_gc');
    setTimeout(() => { v8.setFlagsFromString('--notrace_gc'); }, 60e3);