json-joy
Version:
Collection of libraries for building collaborative editing apps.
31 lines (30 loc) • 1.1 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.stepsEqual = exports.isPunctuation = exports.isWhitespace = exports.isLetter = void 0;
const LETTER_REGEX = /(\p{Letter}|\d|_)/u;
const WHITESPACE_REGEX = /\s/;
const isLetter = (char) => LETTER_REGEX.test(char[0]);
exports.isLetter = isLetter;
const isWhitespace = (char) => WHITESPACE_REGEX.test(char[0]);
exports.isWhitespace = isWhitespace;
const isPunctuation = (char) => !(0, exports.isLetter)(char) && !(0, exports.isWhitespace)(char);
exports.isPunctuation = isPunctuation;
/**
* Compares two block slice types, ignores tag discriminants.
*/
const stepsEqual = (a, b) => {
const lenA = a.length;
const lenB = b.length;
if (lenA !== lenB)
return false;
for (let i = 0; i < lenA; i++) {
const stepA = a[i];
const stepB = b[i];
const tagA = Array.isArray(stepA) ? stepA[0] : stepA;
const tagB = Array.isArray(stepB) ? stepB[0] : stepB;
if (tagA !== tagB)
return false;
}
return true;
};
exports.stepsEqual = stepsEqual;