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author | 2020-11-16 00:10:28 +0100 | |
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committer | 2020-11-16 00:10:28 +0100 | |
commit | e06ec920f7a5d784e674c4c4b4e6d1da3dc7391d (patch) | |
tree | 55713f725f77b44ebfec86e4eec3ce33e71458ca /node_modules/es-abstract/2016/GetMethod.js | |
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api, login, auth
Diffstat (limited to 'node_modules/es-abstract/2016/GetMethod.js')
-rw-r--r-- | node_modules/es-abstract/2016/GetMethod.js | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/node_modules/es-abstract/2016/GetMethod.js b/node_modules/es-abstract/2016/GetMethod.js new file mode 100644 index 0000000..aef8cbc --- /dev/null +++ b/node_modules/es-abstract/2016/GetMethod.js @@ -0,0 +1,42 @@ +'use strict'; + +var GetIntrinsic = require('../GetIntrinsic'); + +var $TypeError = GetIntrinsic('%TypeError%'); + +var GetV = require('./GetV'); +var IsCallable = require('./IsCallable'); +var IsPropertyKey = require('./IsPropertyKey'); + +/** + * 7.3.9 - https://ecma-international.org/ecma-262/6.0/#sec-getmethod + * 1. Assert: IsPropertyKey(P) is true. + * 2. Let func be GetV(O, P). + * 3. ReturnIfAbrupt(func). + * 4. If func is either undefined or null, return undefined. + * 5. If IsCallable(func) is false, throw a TypeError exception. + * 6. Return func. + */ + +module.exports = function GetMethod(O, P) { + // 7.3.9.1 + if (!IsPropertyKey(P)) { + throw new $TypeError('Assertion failed: IsPropertyKey(P) is not true'); + } + + // 7.3.9.2 + var func = GetV(O, P); + + // 7.3.9.4 + if (func == null) { + return void 0; + } + + // 7.3.9.5 + if (!IsCallable(func)) { + throw new $TypeError(P + 'is not a function'); + } + + // 7.3.9.6 + return func; +}; |