Type Alias rna

rna: <T extends string>(
template: TemplateStringsArray,
...substitutions: string[],
) => ValidRNAString<T> extends never ? never : RNASequence<T>

Template literal tag for RNA sequences

Creates validated RNA sequences with U instead of T. Supports all IUPAC ambiguity codes for RNA analysis.

Type Declaration

- <T extends string>(
  template: TemplateStringsArray,
  ...substitutions: string[],
  ): ValidRNAString<T> extends never ? never : RNASequence<T>
- Type Parameters
  - T extends string
  Parameters
  - template: TemplateStringsArray
    Template strings array from template literal
  - ...substitutions: string[]
    Any interpolated values
  Returns ValidRNAString<T> extends never ? never : RNASequence<T>
  Branded RNA sequence that widens to string

Example

const mrna = rna`AUCGAUCG`;              // ✅ Valid RNA with U
const withIUPAC = rna`AUCGRYSWKMN`;      // ✅ IUPAC codes in RNA
const withT = rna`ATCGATCG`;             // ❌ Compiler error - T not valid in RNA
const invalid = rna`AUCGXYZ`;            // ❌ Compiler error - X,Y,Z invalid

Type Alias rna

Type Declaration

Type Parameters

Parameters

Returns ValidRNAString<T> extends never ? never : RNASequence<T>

Example

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