54 lines
1.3 KiB
TypeScript
54 lines
1.3 KiB
TypeScript
/* eslint-disable no-extend-native */
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/* eslint-disable @typescript-eslint/ban-types */
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/**
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* make hooked methods "native"
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*/
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export const makeNative = (() => {
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const l = new Map<Function, Function>()
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hookNative(Function.prototype, 'toString', (_toString) => {
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return function () {
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if (l.has(this)) {
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const _fn = l.get(this) || parseInt // "function () {\n [native code]\n}"
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if (l.has(_fn)) { // nested
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return _fn.toString()
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} else {
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return _toString.call(_fn) as string
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}
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}
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return _toString.call(this) as string
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}
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}, true)
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return (fn: Function, original: Function) => {
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l.set(fn, original)
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}
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})()
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export function hookNative<T extends object, M extends (keyof T)> (
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target: T,
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method: M,
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hook: (originalFn: T[M], detach: () => void) => T[M],
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async = false,
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): void {
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// reserve for future hook update
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const _fn = target[method]
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const detach = () => {
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target[method] = _fn // detach
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}
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// This script can run before anything on the page,
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// so setting this function to be non-configurable and non-writable is no use.
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const hookedFn = hook(_fn, detach)
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target[method] = hookedFn
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if (!async) {
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makeNative(hookedFn as any, _fn as any)
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} else {
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setTimeout(() => {
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makeNative(hookedFn as any, _fn as any)
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})
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}
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}
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