GraphemerHelper.d.ts•1.26 kB
declare class GraphemerHelper {
/**
* Check if the the character at the position {pos} of the string is surrogate
* @param str {string}
* @param pos {number}
* @returns {boolean}
*/
static isSurrogate(str: string, pos: number): boolean;
/**
* The String.prototype.codePointAt polyfill
* Private function, gets a Unicode code point from a JavaScript UTF-16 string
* handling surrogate pairs appropriately
* @param str {string}
* @param idx {number}
* @returns {number}
*/
static codePointAt(str: string, idx: number): number;
/**
* Private function, returns whether a break is allowed between the two given grapheme breaking classes
* Implemented the UAX #29 3.1.1 Grapheme Cluster Boundary Rules on extended grapheme clusters
* @param start {number}
* @param mid {Array<number>}
* @param end {number}
* @param startEmoji {number}
* @param midEmoji {Array<number>}
* @param endEmoji {number}
* @returns {number}
*/
static shouldBreak(start: number, mid: number[], end: number, startEmoji: number, midEmoji: number[], endEmoji: number): number;
}
export default GraphemerHelper;
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