Add support for enumsAsConst to api-codegen-preset

[ryanolf]

Overview/summary

The codgen typescript plugin has an option to generate "as const" enums, which are nice in that they don't need to be imported. So e.g. you can pass "PRODUCT" as a MetafieldOwnerType without having to import a run-time enum (but you still get type checking in modern Typescript). It would be nice if shopifyApiProject and shopifyApiTypes would support this as an option. I think this is a pretty easy change -- happy to submit a PR if it's helpful.

Right now I have to roll my own config using the preset and replicate much of what is in those function:

import { ApiType, pluckConfig, preset } from "@shopify/api-codegen-preset";
import fs from "fs";

const schemaFile = "./src/shopify/types/admin-2025-01.schema.json";
const schema = "https://shopify.dev/admin-graphql-direct-proxy/2025-01";
const schemaFileExists = fs.existsSync(schemaFile);

export default {
  // For syntax highlighting / auto-complete when writing operations
  schema,
  documents: ["./src/**/*.{js,ts,jsx,tsx}", "!dist", "!node_modules/"],
  projects: {
    default: {
      // For type extraction
      schema,
      documents: ["./src/**/*.{js,ts,jsx,tsx}", "!dist", "!node_modules"],
      extensions: {
        codegen: {
          // Enables support for `#graphql` tags, as well as `/* GraphQL */`
          pluckConfig,
          generates: {
            ...(schemaFileExists
              ? {}
              : {
                  [schemaFile]: {
                    schema,
                    plugins: ["introspection"],
                    config: { minify: true },
                  },
                }),
            "./src/shopify/types/admin.types.d.ts": {
              plugins: ["typescript"],
              config: {
                enumsAsConst: true,
              },
            },
            "./src/shopify/types/admin.generated.d.ts": {
              preset,
              presetConfig: {
                apiType: ApiType.Admin,
              },
            },
          },
        },
      },
    },
  },
};

[lizkenyon]

Hi there 👋

Thanks for the flag!

Feel free to submit a PR and the team will prioritize reviewing it.