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@bearz/strings

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A collection of string utilities to avoid extra allocations and enable case insensitivity comparisons.

bearz.io

bearz-io/js-strings

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/** * The is-undefined module provides functions to check if a string is undefined. * * @module */ /** * Determines whether the string is undefined. * @param s The string to check. * @returns `true` if the string is undefined; otherwise, `false`. */ export declare function isUndefined(s: string | undefined): s is undefined;