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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/2018/Set.js | |
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api, login, auth
Diffstat (limited to 'node_modules/es-abstract/2018/Set.js')
-rw-r--r-- | node_modules/es-abstract/2018/Set.js | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/node_modules/es-abstract/2018/Set.js b/node_modules/es-abstract/2018/Set.js new file mode 100644 index 0000000..9545b13 --- /dev/null +++ b/node_modules/es-abstract/2018/Set.js @@ -0,0 +1,47 @@ +'use strict'; + +var GetIntrinsic = require('../GetIntrinsic'); + +var $TypeError = GetIntrinsic('%TypeError%'); + +var IsPropertyKey = require('./IsPropertyKey'); +var SameValue = require('./SameValue'); +var Type = require('./Type'); + +// IE 9 does not throw in strict mode when writability/configurability/extensibility is violated +var noThrowOnStrictViolation = (function () { + try { + delete [].length; + return true; + } catch (e) { + return false; + } +}()); + +// https://ecma-international.org/ecma-262/6.0/#sec-set-o-p-v-throw + +module.exports = function Set(O, P, V, Throw) { + if (Type(O) !== 'Object') { + throw new $TypeError('Assertion failed: `O` must be an Object'); + } + if (!IsPropertyKey(P)) { + throw new $TypeError('Assertion failed: `P` must be a Property Key'); + } + if (Type(Throw) !== 'Boolean') { + throw new $TypeError('Assertion failed: `Throw` must be a Boolean'); + } + if (Throw) { + O[P] = V; // eslint-disable-line no-param-reassign + if (noThrowOnStrictViolation && !SameValue(O[P], V)) { + throw new $TypeError('Attempted to assign to readonly property.'); + } + return true; + } else { + try { + O[P] = V; // eslint-disable-line no-param-reassign + return noThrowOnStrictViolation ? SameValue(O[P], V) : true; + } catch (e) { + return false; + } + } +}; |