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Diffstat (limited to 'src/node_modules/es-abstract/2019/StrictEqualityComparison.js')
-rw-r--r-- | src/node_modules/es-abstract/2019/StrictEqualityComparison.js | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/src/node_modules/es-abstract/2019/StrictEqualityComparison.js b/src/node_modules/es-abstract/2019/StrictEqualityComparison.js new file mode 100644 index 0000000..eea5df3 --- /dev/null +++ b/src/node_modules/es-abstract/2019/StrictEqualityComparison.js @@ -0,0 +1,17 @@ +'use strict'; + +var Type = require('./Type'); + +// https://www.ecma-international.org/ecma-262/5.1/#sec-11.9.6 + +module.exports = function StrictEqualityComparison(x, y) { + var xType = Type(x); + var yType = Type(y); + if (xType !== yType) { + return false; + } + if (xType === 'Undefined' || xType === 'Null') { + return true; + } + return x === y; // shortcut for steps 4-7 +}; |