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@es-toolkit/es-toolkit@1.29.0-dev.958+1d1d0ee6
Built and signed on GitHub Actions
Built and signed on GitHub Actions

A modern JavaScript utility library that's 2-3 times faster and up to 97% smaller—a major upgrade to lodash.

Published

3 months ago (1.29.0-dev.958+1d1d0ee6)

function isString



isString(value?: unknown): value is string

Checks if a given value is string.

This function can also serve as a type predicate in TypeScript, narrowing the type of the argument to string.

Examples

console.log(isString(value1)); // true console.log(isString(value2)); // false console.log(isString(value3)); // false

optional



value: unknown

The value to check if it is string.

value is string

Returns true if value is a string, else false.

Add Package

deno add jsr:@es-toolkit/es-toolkit

Import symbol

import { isString } from "@es-toolkit/es-toolkit/compat";

---- OR ----

Import directly with a jsr specifier

import { isString } from "jsr:@es-toolkit/es-toolkit/compat";

Add Package

npx jsr add @es-toolkit/es-toolkit

Import symbol

import { isString } from "@es-toolkit/es-toolkit/compat";

Add Package

yarn dlx jsr add @es-toolkit/es-toolkit

Import symbol

import { isString } from "@es-toolkit/es-toolkit/compat";

Add Package

pnpm dlx jsr add @es-toolkit/es-toolkit

Import symbol

import { isString } from "@es-toolkit/es-toolkit/compat";

Add Package

bunx jsr add @es-toolkit/es-toolkit

Import symbol

import { isString } from "@es-toolkit/es-toolkit/compat";