mirror of
https://github.com/nodejs/node.git
synced 2026-11-09 15:11:11 -05:00
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>
102 lines
3.6 KiB
JavaScript
102 lines
3.6 KiB
JavaScript
var baseSetData = require('./_baseSetData'),
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createBaseWrapper = require('./_createBaseWrapper'),
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createCurryWrapper = require('./_createCurryWrapper'),
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createHybridWrapper = require('./_createHybridWrapper'),
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createPartialWrapper = require('./_createPartialWrapper'),
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getData = require('./_getData'),
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mergeData = require('./_mergeData'),
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setData = require('./_setData'),
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toInteger = require('./toInteger');
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/** Used to compose bitmasks for wrapper metadata. */
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var BIND_FLAG = 1,
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BIND_KEY_FLAG = 2,
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CURRY_FLAG = 8,
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CURRY_RIGHT_FLAG = 16,
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PARTIAL_FLAG = 32,
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PARTIAL_RIGHT_FLAG = 64;
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/** Used as the `TypeError` message for "Functions" methods. */
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var FUNC_ERROR_TEXT = 'Expected a function';
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/* Built-in method references for those with the same name as other `lodash` methods. */
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var nativeMax = Math.max;
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/**
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* Creates a function that either curries or invokes `func` with optional
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* `this` binding and partially applied arguments.
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*
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* @private
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* @param {Function|string} func The function or method name to wrap.
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* @param {number} bitmask The bitmask of wrapper flags.
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* The bitmask may be composed of the following flags:
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* 1 - `_.bind`
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* 2 - `_.bindKey`
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* 4 - `_.curry` or `_.curryRight` of a bound function
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* 8 - `_.curry`
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* 16 - `_.curryRight`
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* 32 - `_.partial`
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* 64 - `_.partialRight`
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* 128 - `_.rearg`
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* 256 - `_.ary`
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* @param {*} [thisArg] The `this` binding of `func`.
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* @param {Array} [partials] The arguments to be partially applied.
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* @param {Array} [holders] The `partials` placeholder indexes.
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* @param {Array} [argPos] The argument positions of the new function.
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* @param {number} [ary] The arity cap of `func`.
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* @param {number} [arity] The arity of `func`.
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* @returns {Function} Returns the new wrapped function.
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*/
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function createWrapper(func, bitmask, thisArg, partials, holders, argPos, ary, arity) {
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var isBindKey = bitmask & BIND_KEY_FLAG;
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if (!isBindKey && typeof func != 'function') {
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throw new TypeError(FUNC_ERROR_TEXT);
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}
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var length = partials ? partials.length : 0;
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if (!length) {
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bitmask &= ~(PARTIAL_FLAG | PARTIAL_RIGHT_FLAG);
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partials = holders = undefined;
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}
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ary = ary === undefined ? ary : nativeMax(toInteger(ary), 0);
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arity = arity === undefined ? arity : toInteger(arity);
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length -= holders ? holders.length : 0;
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if (bitmask & PARTIAL_RIGHT_FLAG) {
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var partialsRight = partials,
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holdersRight = holders;
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partials = holders = undefined;
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}
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var data = isBindKey ? undefined : getData(func),
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newData = [func, bitmask, thisArg, partials, holders, partialsRight, holdersRight, argPos, ary, arity];
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if (data) {
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mergeData(newData, data);
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}
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func = newData[0];
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bitmask = newData[1];
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thisArg = newData[2];
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partials = newData[3];
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holders = newData[4];
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arity = newData[9] = newData[9] == null
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? (isBindKey ? 0 : func.length)
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: nativeMax(newData[9] - length, 0);
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if (!arity && bitmask & (CURRY_FLAG | CURRY_RIGHT_FLAG)) {
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bitmask &= ~(CURRY_FLAG | CURRY_RIGHT_FLAG);
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}
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if (!bitmask || bitmask == BIND_FLAG) {
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var result = createBaseWrapper(func, bitmask, thisArg);
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} else if (bitmask == CURRY_FLAG || bitmask == CURRY_RIGHT_FLAG) {
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result = createCurryWrapper(func, bitmask, arity);
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} else if ((bitmask == PARTIAL_FLAG || bitmask == (BIND_FLAG | PARTIAL_FLAG)) && !holders.length) {
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result = createPartialWrapper(func, bitmask, thisArg, partials);
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} else {
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result = createHybridWrapper.apply(undefined, newData);
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}
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var setter = data ? baseSetData : setData;
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return setter(result, newData);
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}
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module.exports = createWrapper;
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