Given that Typescript is known for its type safety, it can seem odd that the == operator still exists. Is there a specific rationale behind this decision?
Given that Typescript is known for its type safety, it can seem odd that the == operator still exists. Is there a specific rationale behind this decision?
It is generally advised to steer clear of using ==. There is even a tslint rule emphasizing this point. While there are valid scenarios involving null and undefined equality, such as null == undefined, it's important to note that null !== undefined. Therefore, when using ===, one must check for both undefined and null in cases where a value is missing (as either null or undefined can signify absence), which can be cumbersome.
Regarding the rationale for retaining this practice, I believe their statement on the website captures it succinctly: "Typescript is a typed superset of JavaScript," meaning that everything from JavaScript has been preserved and enhanced with types, including the usage of ==.
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