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	index.ts	1.74 MB		View DL Edit

Edit file: /home/benbot/bot/server/node_modules/data-uri-to-buffer/src/index.ts

export interface MimeBuffer extends Buffer {
	type: string;
	typeFull: string;
	charset: string;
}

/**
 * Returns a `Buffer` instance from the given data URI `uri`.
 *
 * @param {String} uri Data URI to turn into a Buffer instance
 * @returns {Buffer} Buffer instance from Data URI
 * @api public
 */
export function dataUriToBuffer(uri: string): MimeBuffer {
	if (!/^data:/i.test(uri)) {
		throw new TypeError(
			'`uri` does not appear to be a Data URI (must begin with "data:")'
		);
	}

// strip newlines
	uri = uri.replace(/\r?\n/g, '');

// split the URI up into the "metadata" and the "data" portions
	const firstComma = uri.indexOf(',');
	if (firstComma === -1 || firstComma <= 4) {
		throw new TypeError('malformed data: URI');
	}

// remove the "data:" scheme and parse the metadata
	const meta = uri.substring(5, firstComma).split(';');

// get the encoded data portion and decode URI-encoded chars
	const encoding = base64 ? 'base64' : 'ascii';
	const data = unescape(uri.substring(firstComma + 1));
	const buffer = Buffer.from(data, encoding) as MimeBuffer;

// set `.type` and `.typeFull` properties to MIME type
	buffer.type = type;
	buffer.typeFull = typeFull;

// set the `.charset` property
	buffer.charset = charset;

return buffer;
}

export default dataUriToBuffer;

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