Function renderSchemas

packages/httpapi-codegen/src/index.ts:1123–1170

(slots: ReadonlyArray<Slot>)

}

function renderSchemas(slots: ReadonlyArray<Slot>) {
  if (slots.length === 0) return ""
  const classes = new Map(
    slots.flatMap((slot, index) => {
      const tagged = taggedErrorFields(slot.schema)
      return tagged === undefined ? [] : [[index, tagged] as const]
    }),
  )
  const expanded = [
    ...slots.map((slot, index) => (classes.has(index) ? { name: slot.name, schema: Schema.Never } : slot)),
    ...Array.from(classes.values()).flatMap((tagged, classIndex) =>
      tagged.fields.map(([name, schema]) => ({ name: `Class${classIndex}${name}`, schema })),
    ),
  ]
  const [first, ...rest] = expanded
  const document = SchemaRepresentation.toCodeDocument(
    SchemaRepresentation.fromASTs([first.schema.ast, ...rest.map((slot) => slot.schema.ast)]),
  )
  const artifacts = document.artifacts.flatMap((artifact) => {
    if (artifact._tag === "Import") return [artifact.importDeclaration]
    if (artifact._tag === "Enum") return [artifact.generation.runtime]
    return [`const ${artifact.identifier} = ${artifact.generation.runtime}`]
  })
  const references = [
    ...document.references.nonRecursives.map(({ $ref, code }) => `const ${$ref} = ${code.runtime}`),
    ...Object.entries(document.references.recursives).map(
      ([$ref, code]) => `type ${$ref} = ${code.Type}\nconst ${$ref}: Schema.Codec<${$ref}> = ${code.runtime}`,
    ),
  ]
  let fieldIndex = slots.length
  const declarations = slots.map((slot, index) => {
    const tagged = classes.get(index)
    if (tagged === undefined) return `const ${slot.name} = ${document.codes[index].runtime}`
    const fields = tagged.fields
      .map(([name]) => `${JSON.stringify(name)}: ${document.codes[fieldIndex++].runtime}`)
      .join(", ")
    const annotations = Object.entries({
      httpApiStatus: resolveHttpApiStatus(slot.schema.ast),
      "~httpApiEncoding": resolveHttpApiEncoding(slot.schema.ast),
    }).filter((entry) => entry[1] !== undefined)
    const annotate =
      annotations.length === 0
        ? ""
        : `.annotate({ ${annotations.map(([key, value]) => `${JSON.stringify(key)}: ${JSON.stringify(value)}`).join(", ")} })`
    return `class ${slot.name}Class extends Schema.TaggedErrorClass<${slot.name}Class>(${JSON.stringify(tagged.identifier)})(${JSON.stringify(tagged.tag)}, { ${fields} }) {}\nconst ${slot.name} = ${slot.name}Class${annotate}`
  })
  return [...artifacts, ...references, ...declarations].join("\n\n")
}

function renderClient(groups: ReadonlyArray<Group>) {
  const imports = groups