What this snippet does
This pattern is heavily used in older JavaScript libraries (like jQuery or Express) to attach configuration or utilities directly to the main callable function.
Expected output
running
Why practise typing this
Typing namespaces & merging code builds muscle memory for the symbols and indentation TypeScript uses most, which prose-based typing tests never cover. DevType measures your words per minute and accuracy on this snippet and tracks the individual characters you mistype, so later lessons can target them.
More TypeScript practice
- Adding static properties to a function via namespaceNamespaces & Merging · advanced
- Namespace merging failing on arrow functionsNamespaces & Merging · advanced
- Declaring variables with primitive typesBasic Types · beginner
- Typing function parameters with primitivesBasic Types · beginner
- Assigning a string to a number variableBasic Types · beginner
- Defining an array of numbersBasic Types · beginner