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66 lines
2.8 KiB
66 lines
2.8 KiB
// String utilities
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import { RX_HYPHENATE, RX_LOWER_UPPER, RX_REGEXP_REPLACE, RX_START_SPACE_WORD, RX_TRIM_LEFT, RX_TRIM_RIGHT, RX_UNDERSCORE, RX_UN_KEBAB } from '../constants/regex';
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import { isArray, isPlainObject, isString, isUndefinedOrNull } from './inspect'; // --- Utilities ---
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// Converts PascalCase or camelCase to kebab-case
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export var kebabCase = function kebabCase(str) {
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return str.replace(RX_HYPHENATE, '-$1').toLowerCase();
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}; // Converts a kebab-case or camelCase string to PascalCase
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export var pascalCase = function pascalCase(str) {
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str = kebabCase(str).replace(RX_UN_KEBAB, function (_, c) {
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return c ? c.toUpperCase() : '';
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});
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return str.charAt(0).toUpperCase() + str.slice(1);
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}; // Converts a string, including strings in camelCase or snake_case, into Start Case
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// It keeps original single quote and hyphen in the word
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// https://github.com/UrbanCompass/to-start-case
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export var startCase = function startCase(str) {
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return str.replace(RX_UNDERSCORE, ' ').replace(RX_LOWER_UPPER, function (str, $1, $2) {
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return $1 + ' ' + $2;
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}).replace(RX_START_SPACE_WORD, function (str, $1, $2) {
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return $1 + $2.toUpperCase();
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});
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}; // Lowercases the first letter of a string and returns a new string
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export var lowerFirst = function lowerFirst(str) {
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str = isString(str) ? str.trim() : String(str);
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return str.charAt(0).toLowerCase() + str.slice(1);
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}; // Uppercases the first letter of a string and returns a new string
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export var upperFirst = function upperFirst(str) {
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str = isString(str) ? str.trim() : String(str);
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return str.charAt(0).toUpperCase() + str.slice(1);
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}; // Escape characters to be used in building a regular expression
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export var escapeRegExp = function escapeRegExp(str) {
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return str.replace(RX_REGEXP_REPLACE, '\\$&');
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}; // Convert a value to a string that can be rendered
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// `undefined`/`null` will be converted to `''`
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// Plain objects and arrays will be JSON stringified
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export var toString = function toString(val) {
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var spaces = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 2;
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return isUndefinedOrNull(val) ? '' : isArray(val) || isPlainObject(val) && val.toString === Object.prototype.toString ? JSON.stringify(val, null, spaces) : String(val);
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}; // Remove leading white space from a string
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export var trimLeft = function trimLeft(str) {
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return toString(str).replace(RX_TRIM_LEFT, '');
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}; // Remove Trailing white space from a string
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export var trimRight = function trimRight(str) {
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return toString(str).replace(RX_TRIM_RIGHT, '');
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}; // Remove leading and trailing white space from a string
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export var trim = function trim(str) {
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return toString(str).trim();
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}; // Lower case a string
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export var lowerCase = function lowerCase(str) {
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return toString(str).toLowerCase();
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}; // Upper case a string
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export var upperCase = function upperCase(str) {
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return toString(str).toUpperCase();
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};
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