@tldraw/utils/dist-esm/lib/debounce.mjs.map

tldraw infinite canvas SDK (private utilities).

{
  "version": 3,
  "sources": ["../../src/lib/debounce.ts"],
  "sourcesContent": ["/**\n * Debounce a function.\n *\n * @example\n *\n * ```ts\n * const A = debounce(myFunction, 1000)\n * ```\n *\n * @public\n * @see source - https://gist.github.com/ca0v/73a31f57b397606c9813472f7493a940\n */\nexport function debounce<T extends unknown[], U>(\n\tcallback: (...args: T) => PromiseLike<U> | U,\n\twait: number\n) {\n\tlet state:\n\t\t| undefined\n\t\t| {\n\t\t\t\ttimeout: ReturnType<typeof setTimeout>\n\t\t\t\tpromise: Promise<U>\n\t\t\t\tresolve(value: U | PromiseLike<U>): void\n\t\t\t\treject(value: any): void\n\t\t\t\tlatestArgs: T\n\t\t  } = undefined\n\n\tconst fn = (...args: T): Promise<U> => {\n\t\tif (!state) {\n\t\t\tstate = {} as any\n\t\t\tstate!.promise = new Promise((resolve, reject) => {\n\t\t\t\tstate!.resolve = resolve\n\t\t\t\tstate!.reject = reject\n\t\t\t})\n\t\t}\n\t\tclearTimeout(state!.timeout)\n\t\tstate!.latestArgs = args\n\t\t// It's up to the consumer of debounce to call `cancel`\n\t\t// eslint-disable-next-line no-restricted-globals\n\t\tstate!.timeout = setTimeout(() => {\n\t\t\tconst s = state!\n\t\t\tstate = undefined\n\t\t\ttry {\n\t\t\t\ts.resolve(callback(...s.latestArgs))\n\t\t\t} catch (e) {\n\t\t\t\ts.reject(e)\n\t\t\t}\n\t\t}, wait)\n\n\t\treturn state!.promise\n\t}\n\tfn.cancel = () => {\n\t\tif (!state) return\n\t\tclearTimeout(state.timeout)\n\t}\n\treturn fn\n}\n"],
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