What this snippet does
Even with ambient declarations, TypeScript strictly enforces that imports must match the declared exports of the module.
Expected output
Compile Error: Module '"lib"' has no exported member 'b'.
Why practise typing this
Typing modules & namespaces 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
- Exporting and importing a typed variableModules & Namespaces · intermediate
- Exporting an interface and implementationModules & Namespaces · intermediate
- Importing a type without 'type' modifier in isolatedModulesModules & Namespaces · intermediate
- Defining a default exportModules & Namespaces · intermediate
- Default exporting a class instanceModules & Namespaces · intermediate
- Mixing default and named imports incorrectlyModules & Namespaces · intermediate