Class Grade

Static ReadonlyBANDS

compareTo

• compareTo(other: Grade): number

  Negative / zero / positive comparator by ordinal.

  Parameters

  • other: Grade

  Returns number

equals

• equals(other: Grade): boolean

  Ordinal equality.

  Parameters

  • other: Grade

  Returns boolean

getBand

• getBand(): "fine" | "poor" | "fair" | "exceptional" | "masterful"

  The band word.

  Returns "fine" | "poor" | "fair" | "exceptional" | "masterful"

getOrdinal

• getOrdinal(): number

  The ordinal (0 = poor … 4 = masterful).

  Returns number

max

• max(other: Grade): Grade

  The higher of two grades.

  Parameters

  • other: Grade

  Returns Grade

min

• min(other: Grade): Grade

  The lower of two grades.

  Parameters

  • other: Grade

  Returns Grade

renderBandWord

• renderBandWord(): string

  The legible headline word (e.g. 'fine').

  Returns string

StaticderiveAtFixedControl

• deriveAtFixedControl(inputGrades: readonly Grade[], _control?: number): Grade

  Derive an output grade from input grades at a fixed control level (the v1 skill seam). The rule is weakest-link: a craft is only as good as its poorest input — min across the inputs. The _control parameter is the deferred skill seam (a master would let the best input dominate and reach the material's extremes); v1 ignores it, keeping the signature stable for the advancement layer to light up.

  With no inputs, falls back to fair (a neutral middle), so a craft with no graded matter still yields a verdict.

  Parameters

  • inputGrades: readonly Grade[]
  • Optional_control: number

  Returns Grade

StaticfromOrdinal

• fromOrdinal(n: number): Grade

  Construct from an ordinal, clamped into 0..4.

  Parameters

  • n: number

  Returns Grade

StaticisBand

• isBand(s: string): s is "fine" | "poor" | "fair" | "exceptional" | "masterful"

  Narrowing predicate for a string against the band vocabulary.

  Parameters

  • s: string

  Returns s is "fine" | "poor" | "fair" | "exceptional" | "masterful"

Staticof

• of(band: string): Grade

  Construct from a band word. Throws on an unknown band.

  Parameters

  • band: string

  Returns Grade