json-to-typescript.ts

// Name: JSON to TypeScript
// Description: Convert some JSON to TypeScript models

import "@johnlindquist/kit"

import jsonToTS from "json-to-ts"

import { submitShortcut } from "@johnlindquist/kit/core/utils"
import { refreshable } from "@josxa/kit-utils"
import { crudArg } from "@josxa/kit-utils"
import ModernError from "modern-errors"

let json = args[0]

if (!json) {
  json = await editor({
    language: "json",
    validate(input: string): true | string {
      try {
        JSON.parse(input)
        return true
      } catch (err) {
        return ModernError.normalize(err).message
      }
    },
    shortcuts: [submitShortcut],
  })
}

const rootName = await crudArg("Name of the root type?")

const options: Parameters<typeof jsonToTS>[1] = {
  rootName,
  useTypeAlias: true,
}

await refreshable(async ({ refresh }) => {
  let types = ""

  try {
    types = `${jsonToTS(JSON.parse(json), options).join("\n\n")}\n`
  } catch (error) {
    const hint = ModernError.normalize(error).message
    setHint(hint)
    exit()
  }

  if (options.useTypeAlias) {
    types = types.replaceAll(/^type /g, "export type ")
  } else {
    types = types.replaceAll(/^interface /g, "export interface ")
  }

  await editor({
    value: types,
    language: "ts",
    shortcuts: [
      {
        key: `${cmd}+shift+t`,
        name: `Use ${options.useTypeAlias ? "Interfaces" : "Types"}`,
        onPress: () => {
          options.useTypeAlias = !options.useTypeAlias
          refresh()
        },
        visible: true,
        bar: "right",
      },
      {
        name: "Copy to Clipboard",
        key: `${cmd}+shift+c`,
        onPress: async (input) => {
          await clipboard.writeText(input)
          setHint("Copied to clipboard")
        },
        visible: true,
        bar: "right",
      },
    ],
  })
})