Lang
Overview
The framework re-exports lodash-es via the facade for language-level utilities: type checking, cloning, and equality comparison.
Import
ts
import { lodash } from "@/framework/facade.js";Type Checking
| Method | Purpose |
|---|---|
lodash.isNil(value) | Checks if value is null or undefined |
lodash.isNull(value) | Checks if value is null |
lodash.isUndefined(value) | Checks if value is undefined |
lodash.isNumber(value) | Checks if value is a number |
lodash.isString(value) | Checks if value is a string |
lodash.isBoolean(value) | Checks if value is a boolean |
lodash.isArray(value) | Checks if value is an array |
lodash.isObject(value) | Checks if value is an object-like |
lodash.isPlainObject(value) | Checks if value is a plain object ({}) |
lodash.isFunction(value) | Checks if value is a function |
lodash.isDate(value) | Checks if value is a Date |
lodash.isRegExp(value) | Checks if value is a regex |
lodash.isSymbol(value) | Checks if value is a symbol |
lodash.isMap(value) | Checks if value is a Map |
lodash.isSet(value) | Checks if value is a Set |
lodash.isWeakMap(value) | Checks if value is a WeakMap |
lodash.isWeakSet(value) | Checks if value is a WeakSet |
lodash.isNaN(value) | Checks if value is NaN |
lodash.isEmpty(value) | Checks if value is an empty object, collection, map, or set |
lodash.isElement(value) | Checks if value is a DOM element |
lodash.isError(value) | Checks if value is an error |
Cloning & Equality
| Method | Purpose |
|---|---|
lodash.clone(value) | Shallow clones a value |
lodash.cloneDeep(value) | Deep clones a value (handles circular references) |
lodash.isEqual(a, b) | Performs a deep comparison between two values |
lodash.isEqualWith(a, b, customizer) | Deep comparison with customizer |
Conversion
| Method | Purpose |
|---|---|
lodash.toArray(value) | Converts value to an array |
lodash.toFinite(value) | Converts value to a finite number |
lodash.toInteger(value) | Converts value to an integer |
lodash.toNumber(value) | Converts value to a number |
lodash.toString(value) | Converts value to a string |
Usage
ts
import { lodash } from "@/framework/facade.js";
const user = { name: "Alice", nested: { age: 25 } };
// Deep clone
const cloned = lodash.cloneDeep(user);
cloned.nested.age = 30;
console.log(user.nested.age);
// 25 (original unchanged)
// Deep comparison
lodash.isEqual({ a: 1 }, { a: 1 });
// true
lodash.isEqual(NaN, NaN);
// true (unlike native)
// Type checks
lodash.isNil(null); // true
lodash.isNil(undefined); // true
lodash.isNil(0); // false
lodash.isNil(""); // false
lodash.isPlainObject({}); // true
lodash.isPlainObject(new Date()); // falseReference
Refer to the lodash lang documentation for the complete list of available methods.