@naturalcycles/js-lib/dist/string/string.util.js

Standard library for universal (browser + Node.js) javascript

/**
 * Converts the first character of string to upper case and the remaining to lower case.
 * Returns a type-safe capitalized string.
 */
export function _capitalize(s = '') {
    return (s.charAt(0).toUpperCase() + s.slice(1).toLowerCase());
}
/**
 * Convert a string to a type-safe uppercase string.
 */
export function _toUpperCase(s) {
    return s.toUpperCase();
}
/**
 * Convert a string to a type-safe lowercase string.
 */
export function _toLowercase(s) {
    return s.toLowerCase();
}
export function _upperFirst(s = '') {
    return (s.charAt(0).toUpperCase() + s.slice(1));
}
export function _lowerFirst(s) {
    return (s.charAt(0).toLowerCase() + s.slice(1));
}
/**
 * Like String.split(), but with limit, returning the tail together with last element.
 *
 * @returns Returns the new array of string segments.
 */
export function _split(str, separator, limit) {
    const parts = str.split(separator);
    if (parts.length <= limit)
        return parts;
    return [...parts.slice(0, limit - 1), parts.slice(limit - 1).join(separator)];
}
export function _removeWhitespace(s) {
    return s.replaceAll(/\s/g, '');
}
/**
 * _.truncate('hi-diddly-ho there, neighborino')
 * // => 'hi-diddly-ho there, neighbo...'
 */
export function _truncate(s, maxLen, omission = '...') {
    if (!s || s.length <= maxLen)
        return s;
    if (maxLen <= omission.length)
        return omission;
    return s.slice(0, maxLen - omission.length) + omission;
}
/**
 * _.truncateMiddle('abcdefghijklmnopqrstuvwxyz', 10)
 * // => 'abcd...xyz'
 */
export function _truncateMiddle(s, maxLen, omission = '...') {
    if (!s || s.length <= maxLen)
        return s;
    if (maxLen <= omission.length)
        return omission;
    const mark1 = Math.round((maxLen - omission.length) / 2);
    const mark2 = s.length - Math.floor((maxLen - omission.length) / 2);
    return s.slice(0, mark1) + omission + s.slice(mark2);
}
// These functions are modeled after Kotlin's String API
export function _substringBefore(s, delimiter) {
    const pos = s.indexOf(delimiter);
    return s.slice(0, pos !== -1 ? pos : undefined);
}
export function _substringBeforeLast(s, delimiter) {
    const pos = s.lastIndexOf(delimiter);
    return s.slice(0, pos !== -1 ? pos : undefined);
}
export function _substringAfter(s, delimiter) {
    const pos = s.indexOf(delimiter);
    return pos !== -1 ? s.slice(pos + delimiter.length) : s;
}
export function _substringAfterLast(s, delimiter) {
    const pos = s.lastIndexOf(delimiter);
    return pos !== -1 ? s.slice(pos + delimiter.length) : s;
}
/**
 * Returns the substring between LAST `leftDelimiter` and then FIRST `rightDelimiter`.
 *
 * @example
 *
 * const s = '/Users/lalala/someFile.test.ts'
 * _substringBetweenLast(s, '/', '.')
 * // `someFile`
 */
export function _substringBetweenLast(s, leftDelimiter, rightDelimiter) {
    return _substringBefore(_substringAfterLast(s, leftDelimiter), rightDelimiter);
}
/**
 * Converts `\n` (aka new-line) to `<br>`, to be presented in HTML.
 * Keeps `\n`, so if it's printed in non-HTML environment it still looks ok-ish.
 */
export function _nl2br(s) {
    return s.replaceAll('\n', '<br>\n');
}