Function compactUnion

packages/effect/src/JSONSchema.ts:1029–1047

(members: Array<JsonSchema7>)

}

function compactUnion(members: Array<JsonSchema7>): Array<JsonSchema7> {
  const out: Array<JsonSchema7> = []
  for (const m of members) {
    if (isNeverWithoutCustomAnnotations(m)) continue
    if (isAny(m) || isUnknown(m) || isVoid(m)) return [m]
    if (isCompactableLiteral(m) && out.length > 0) {
      const last = out[out.length - 1]
      if (isCompactableLiteral(last) && last.type === m.type) {
        out[out.length - 1] = {
          type: last.type,
          enum: [...last.enum, ...m.enum]
        } as JsonSchema7Enum
        continue
      }
    }
    out.push(m)
  }
  return out
}