I guess this is a bug in TypeScript, so you should raise one at the project site. You can make use of the typed dictionary by splitting your example up in declaration and initialization, like:

If you are using TypeScript, it is a better approach to let the compiler check for nulls and undefineds (or the possibility thereof), rather than checking for them at run-time.

41 for..in When looking at the Typescript documentation (Typescript: Iterators and Generators), we see that the for..in syntax will iterate over the keys of the object. for..in returns a list of keys …

Declaration Merging The key aspect to interfaces in typescript that distinguish them from types is that they can be extended with new functionality after they've already been declared. A …

Possible to extend types in Typescript? Asked 8 years, 10 months ago Modified 6 months ago Viewed 919k times

There is no TypeScript function like that, that is a javascript function. TypeScript merely knows the api and provides a typed interface for it.

Learn how to dynamically assign properties to an object in TypeScript with this helpful guide.

Feb 2, 2019 · Alternatively, you can type name1 as string | undefined, and handle cases of undefined further down. However, it's typically better to handle unexpected errors earlier on. …

I would like to iterate a TypeScript enum object and get each enumerated symbol name, for example: enum myEnum { entry1, entry2 } for (var entry in myEnum) { // use entry's name …

How can I calculate the time between 2 Dates in typescript Asked 12 years, 8 months ago Modified 2 years, 9 months ago Viewed 260k times