Function

Overview

The framework re-exports lodash-es via the facade for function utilities. These helpers control execution timing, argument handling, and behavior modification.

Import

import { lodash } from "@/framework/facade.js";

Common Methods

Method	Purpose
lodash.debounce(func, wait, options)	Delays invocation until wait ms after the last call
lodash.throttle(func, wait, options)	Ensures at most one call per wait ms
lodash.memoize(func, resolver)	Caches the result of a function call
lodash.once(func)	Ensures func is called only once
lodash.after(n, func)	Calls func after it has been called n times
lodash.before(n, func)	Calls func no more than n times
lodash.ary(func, n)	Limits arguments to n
lodash.curry(func, arity)	Curries the function
lodash.curryRight(func, arity)	Right-curries the function
lodash.negate(predicate)	Creates a negated predicate function
lodash.wrap(value, wrapper)	Wraps value with wrapper
lodash.delay(func, wait, ...args)	Calls func after wait ms
lodash.defer(func, ...args)	Calls func at the end of the current event loop
lodash.overArgs(func, transforms)	Transforms arguments before calling func
lodash.flip(func)	Creates a function with inverted arguments
lodash.partial(func, ...partials)	Partially applies arguments from the left
lodash.partialRight(func, ...partials)	Partially applies arguments from the right

Usage

import { lodash } from "@/framework/facade.js";

// Debounce search input
const search = lodash.debounce(
  (query: string) => fetch(`/api?q=${query}`),
  300
);

// Throttle scroll handler
const onScroll = lodash.throttle(() => {
  console.log("scrolled");
}, 200);

// Memoize expensive computation
const factor = lodash.memoize((n: number) => {
  let f = 1;
  for (let i = 2; i <= n; i++) f *= i;
  return f;
});

// Run callback only after 3 calls
const done = lodash.after(3, () => console.log("All ready!"));

Reference

Refer to the lodash function documentation for the complete list of available methods.