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author | Florian Dold <florian.dold@gmail.com> | 2017-05-28 00:38:50 +0200 |
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committer | Florian Dold <florian.dold@gmail.com> | 2017-05-28 00:40:43 +0200 |
commit | 7fff4499fd915bcea3fa93b1aa8b35f4fe7a6027 (patch) | |
tree | 6de9a1aebd150a23b7f8c273ec657a5d0a18fe3e /node_modules/deep-equal/index.js | |
parent | 963b7a41feb29cc4be090a2446bdfe0c1f1bcd81 (diff) | |
download | wallet-core-7fff4499fd915bcea3fa93b1aa8b35f4fe7a6027.tar.xz |
add linting (and some initial fixes)
Diffstat (limited to 'node_modules/deep-equal/index.js')
-rw-r--r-- | node_modules/deep-equal/index.js | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/node_modules/deep-equal/index.js b/node_modules/deep-equal/index.js new file mode 100644 index 000000000..0772f8c7e --- /dev/null +++ b/node_modules/deep-equal/index.js @@ -0,0 +1,94 @@ +var pSlice = Array.prototype.slice; +var objectKeys = require('./lib/keys.js'); +var isArguments = require('./lib/is_arguments.js'); + +var deepEqual = module.exports = function (actual, expected, opts) { + if (!opts) opts = {}; + // 7.1. All identical values are equivalent, as determined by ===. + if (actual === expected) { + return true; + + } else if (actual instanceof Date && expected instanceof Date) { + return actual.getTime() === expected.getTime(); + + // 7.3. Other pairs that do not both pass typeof value == 'object', + // equivalence is determined by ==. + } else if (!actual || !expected || typeof actual != 'object' && typeof expected != 'object') { + return opts.strict ? actual === expected : actual == expected; + + // 7.4. For all other Object pairs, including Array objects, equivalence is + // determined by having the same number of owned properties (as verified + // with Object.prototype.hasOwnProperty.call), the same set of keys + // (although not necessarily the same order), equivalent values for every + // corresponding key, and an identical 'prototype' property. Note: this + // accounts for both named and indexed properties on Arrays. + } else { + return objEquiv(actual, expected, opts); + } +} + +function isUndefinedOrNull(value) { + return value === null || value === undefined; +} + +function isBuffer (x) { + if (!x || typeof x !== 'object' || typeof x.length !== 'number') return false; + if (typeof x.copy !== 'function' || typeof x.slice !== 'function') { + return false; + } + if (x.length > 0 && typeof x[0] !== 'number') return false; + return true; +} + +function objEquiv(a, b, opts) { + var i, key; + if (isUndefinedOrNull(a) || isUndefinedOrNull(b)) + return false; + // an identical 'prototype' property. + if (a.prototype !== b.prototype) return false; + //~~~I've managed to break Object.keys through screwy arguments passing. + // Converting to array solves the problem. + if (isArguments(a)) { + if (!isArguments(b)) { + return false; + } + a = pSlice.call(a); + b = pSlice.call(b); + return deepEqual(a, b, opts); + } + if (isBuffer(a)) { + if (!isBuffer(b)) { + return false; + } + if (a.length !== b.length) return false; + for (i = 0; i < a.length; i++) { + if (a[i] !== b[i]) return false; + } + return true; + } + try { + var ka = objectKeys(a), + kb = objectKeys(b); + } catch (e) {//happens when one is a string literal and the other isn't + return false; + } + // having the same number of owned properties (keys incorporates + // hasOwnProperty) + if (ka.length != kb.length) + return false; + //the same set of keys (although not necessarily the same order), + ka.sort(); + kb.sort(); + //~~~cheap key test + for (i = ka.length - 1; i >= 0; i--) { + if (ka[i] != kb[i]) + return false; + } + //equivalent values for every corresponding key, and + //~~~possibly expensive deep test + for (i = ka.length - 1; i >= 0; i--) { + key = ka[i]; + if (!deepEqual(a[key], b[key], opts)) return false; + } + return typeof a === typeof b; +} |