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@stdlib/string-starts-with

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Test if a string starts with the characters of another string.

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/* * @license Apache-2.0 * * Copyright (c) 2019 The Stdlib Authors. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ // TypeScript Version: 4.1 /** * Tests if a string starts with the characters of another string. * * ## Notes * * - If provided a negative `position`, the search starting position is resolved relative to the end of the string. For example, if provided the input string `'beep boop'` and a `position` equal to `-2`, the starting position resolves to `7`. * * @param str - input string * @param search - search string * @param position - position at which to start searching (default: 0) * @returns boolean indicating if the input string starts with the search string * * @example * var bool = startsWith( 'Remember the story I used to tell you when you were a boy?', 'Remember' ); * // returns true * * @example * var bool = startsWith( 'Remember the story I used to tell you when you were a boy?', 'Remember, remember' ); * // returns false * * @example * var bool = startsWith( 'To be, or not to be, that is the question.', 'To be' ); * // returns true * * @example * var bool = startsWith( 'To be, or not to be, that is the question.', 'to be' ); * // returns false * * @example * var bool = startsWith( 'To be, or not to be, that is the question.', 'to be', 14 ); * // returns true * * @example * var bool = startsWith( 'To be, or not to be, that is the question.', 'quest', -9 ); * // returns true */ declare function startsWith( str: string, search: string, position?: number ): boolean; // EXPORTS // export = startsWith;