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Rich Trott
d7aa8fa088
Update ESLint to 2.1.0. ESLint has a number of potentially-useful new features but this change attempts to be minimal in its changes. However, some things could not be avoided reasonably. ESLint 2.1.0 found a few lint issues that ESLing 1.x missed with template strings that did not take advantage of any features of template strings, and `let` declarations where `const` sufficed. Additionally, ESLint 2.1.0 removes some granularity around enabling ES6 features. Some features (e.g., spread operator) that had been turned off in our configuration for ESLint 1.x are now permitted. PR-URL: https://github.com/nodejs/node/pull/5214 Reviewed-By: Michaël Zasso <mic.besace@gmail.com> Reviewed-By: jbergstroem - Johan Bergström <bugs@bergstroem.nu> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Roman Reiss <me@silverwind.io> Reviewed-By: Myles Borins <myles.borins@gmail.com>
36 lines
1.2 KiB
JavaScript
36 lines
1.2 KiB
JavaScript
var stringToArray = require('./_stringToArray'),
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toString = require('./toString');
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/** Used to compose unicode character classes. */
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var rsAstralRange = '\\ud800-\\udfff',
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rsComboMarksRange = '\\u0300-\\u036f\\ufe20-\\ufe23',
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rsComboSymbolsRange = '\\u20d0-\\u20f0',
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rsVarRange = '\\ufe0e\\ufe0f';
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/** Used to compose unicode capture groups. */
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var rsZWJ = '\\u200d';
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/** Used to detect strings with [zero-width joiners or code points from the astral planes](http://eev.ee/blog/2015/09/12/dark-corners-of-unicode/). */
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var reHasComplexSymbol = RegExp('[' + rsZWJ + rsAstralRange + rsComboMarksRange + rsComboSymbolsRange + rsVarRange + ']');
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/**
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* Creates a function like `_.lowerFirst`.
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*
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* @private
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* @param {string} methodName The name of the `String` case method to use.
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* @returns {Function} Returns the new function.
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*/
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function createCaseFirst(methodName) {
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return function(string) {
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string = toString(string);
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var strSymbols = reHasComplexSymbol.test(string) ? stringToArray(string) : undefined,
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chr = strSymbols ? strSymbols[0] : string.charAt(0),
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trailing = strSymbols ? strSymbols.slice(1).join('') : string.slice(1);
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return chr[methodName]() + trailing;
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};
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}
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module.exports = createCaseFirst;
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