65 lines
1.9 KiB
HTML
65 lines
1.9 KiB
HTML
<!--
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@license
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Copyright (c) 2017 The Polymer Project Authors. All rights reserved.
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This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
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The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
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The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
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Code distributed by Google as part of the polymer project is also
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subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
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-->
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<link rel="import" href="boot.html">
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<script>
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(function() {
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'use strict';
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const caseMap = {};
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const DASH_TO_CAMEL = /-[a-z]/g;
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const CAMEL_TO_DASH = /([A-Z])/g;
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/**
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* Module with utilities for converting between "dash-case" and "camelCase"
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* identifiers.
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*
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* @namespace
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* @memberof Polymer
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* @summary Module that provides utilities for converting between "dash-case"
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* and "camelCase".
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*/
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const CaseMap = {
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/**
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* Converts "dash-case" identifier (e.g. `foo-bar-baz`) to "camelCase"
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* (e.g. `fooBarBaz`).
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*
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* @memberof Polymer.CaseMap
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* @param {string} dash Dash-case identifier
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* @return {string} Camel-case representation of the identifier
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*/
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dashToCamelCase(dash) {
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return caseMap[dash] || (
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caseMap[dash] = dash.indexOf('-') < 0 ? dash : dash.replace(DASH_TO_CAMEL,
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(m) => m[1].toUpperCase()
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)
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);
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},
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/**
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* Converts "camelCase" identifier (e.g. `fooBarBaz`) to "dash-case"
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* (e.g. `foo-bar-baz`).
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*
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* @memberof Polymer.CaseMap
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* @param {string} camel Camel-case identifier
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* @return {string} Dash-case representation of the identifier
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*/
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camelToDashCase(camel) {
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return caseMap[camel] || (
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caseMap[camel] = camel.replace(CAMEL_TO_DASH, '-$1').toLowerCase()
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);
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}
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};
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Polymer.CaseMap = CaseMap;
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})();
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</script>
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