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author | Florian Dold <florian.dold@gmail.com> | 2017-08-14 05:01:11 +0200 |
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committer | Florian Dold <florian.dold@gmail.com> | 2017-08-14 05:02:09 +0200 |
commit | 363723fc84f7b8477592e0105aeb331ec9a017af (patch) | |
tree | 29f92724f34131bac64d6a318dd7e30612e631c7 /node_modules/is-accessor-descriptor/index.js | |
parent | 5634e77ad96bfe1818f6b6ee70b7379652e5487f (diff) | |
download | wallet-core-363723fc84f7b8477592e0105aeb331ec9a017af.tar.xz |
node_modules
Diffstat (limited to 'node_modules/is-accessor-descriptor/index.js')
-rw-r--r-- | node_modules/is-accessor-descriptor/index.js | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/node_modules/is-accessor-descriptor/index.js b/node_modules/is-accessor-descriptor/index.js new file mode 100644 index 000000000..2ca4af8bd --- /dev/null +++ b/node_modules/is-accessor-descriptor/index.js @@ -0,0 +1,69 @@ +/*! + * is-accessor-descriptor <https://github.com/jonschlinkert/is-accessor-descriptor> + * + * Copyright (c) 2015, Jon Schlinkert. + * Licensed under the MIT License. + */ + +'use strict'; + +var typeOf = require('kind-of'); + +// accessor descriptor properties +var accessor = { + get: 'function', + set: 'function', + configurable: 'boolean', + enumerable: 'boolean' +}; + +function isAccessorDescriptor(obj, prop) { + if (typeof prop === 'string') { + var val = Object.getOwnPropertyDescriptor(obj, prop); + return typeof val !== 'undefined'; + } + + if (typeOf(obj) !== 'object') { + return false; + } + + if (has(obj, 'value') || has(obj, 'writable')) { + return false; + } + + if (!has(obj, 'get') || typeof obj.get !== 'function') { + return false; + } + + // tldr: it's valid to have "set" be undefined + // "set" might be undefined if `Object.getOwnPropertyDescriptor` + // was used to get the value, and only `get` was defined by the user + if (has(obj, 'set') && typeof obj[key] !== 'function' && typeof obj[key] !== 'undefined') { + return false; + } + + for (var key in obj) { + if (!accessor.hasOwnProperty(key)) { + continue; + } + + if (typeOf(obj[key]) === accessor[key]) { + continue; + } + + if (typeof obj[key] !== 'undefined') { + return false; + } + } + return true; +} + +function has(obj, key) { + return {}.hasOwnProperty.call(obj, key); +} + +/** + * Expose `isAccessorDescriptor` + */ + +module.exports = isAccessorDescriptor; |