What this snippet does
Satisfies guarantees the object matches the Record type while preserving the literal types of specific keys.
Expected output
#007bff
Why practise typing this
Typing modern typescript 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
- Using satisfies to enforce type conformityModern TypeScript · intermediate
- Losing literal types by annotating instead of satisfiesModern TypeScript · intermediate
- 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