33 lines
1.1 KiB
TypeScript
33 lines
1.1 KiB
TypeScript
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/**
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* Calculates the byte length of a base64 encoded string.
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* @param {string} string Base64 encoded string
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* @returns {number} Byte length
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*/
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export function length(string: string): number;
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/**
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* Encodes a buffer to a base64 encoded string.
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* @param {Uint8Array} buffer Source buffer
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* @param {number} start Source start
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* @param {number} end Source end
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* @returns {string} Base64 encoded string
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*/
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export function encode(buffer: Uint8Array, start: number, end: number): string;
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/**
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* Decodes a base64 encoded string to a buffer.
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* @param {string} string Source string
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* @param {Uint8Array} buffer Destination buffer
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* @param {number} offset Destination offset
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* @returns {number} Number of bytes written
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* @throws {Error} If encoding is invalid
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*/
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export function decode(string: string, buffer: Uint8Array, offset: number): number;
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/**
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* Tests if the specified string appears to be base64 encoded.
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* @param {string} string String to test
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* @returns {boolean} `true` if it appears to be base64 encoded, otherwise false
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*/
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export function test(string: string): boolean;
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