Gatsby operations

This Gatsby plugin allows to use persisted query ids provided by @amazeelabs/codegen-operation-ids within templates and in the createPages hook.

Installation

Install the package and configure the plugin within Gatsby. The only argument is the path to the file of generated operation ids:

export const plugins = {
  {
    resolve: '@amazeelabs/gatsby-plugin-operations',
    options: {
      operations: './node_modules/@custom/schema/build/operations.json',
    },
  }
}

To get proper type checking, you have to augment Gatsby type definitions, by placing this anywhere in the src directory:

import {
  AnyOperationId,
  OperationResult,
  OperationVariables,
} from '@custom/schema';

declare module '@amazeelabs/gatsby-plugin-operations' {
  export const graphql: <OperationId extends AnyOperationId>(
    id: OperationId,
  ) => OperationResult<OperationId>;

  function useStaticQuery<Input extends any>(id: Input): Input;

  function graphqlQuery<OperationId extends AnyOperationId>(
    id: OperationId,
    vars?: OperationVariables<OperationId>,
  ): Promise<{
    data: OperationResult<OperationId>;
    errors?: Array<any>;
  }>;
}

This relies on the build output of @amazeelabs/codegen-operation-ids being exported by @custom/schema.

Usage

In templates

For template queries, simply use graphqlOperation to define the query export. The query variable can be used directly to infer the template components properties.

import { graphql } from '@amazeelabs/gatsby-plugin-operations';
import { ViewPageQuery } from '@custom/schema';

export const query = graphql(ViewPageQuery);
export default function Page({
  data,
  pageContext,
}: PageProps<typeof query>) {
  return <div>...</div>
}

In static queries

To run a static query, one can use graphql in combination with useStaticQuery. This will yield a fully typed result of the requested query.

import { useStaticQuery, graphql } from '@amazeelabs/gatsby-plugin-operations';
import { ListProductsQuery } from '@custom/schema';

const myResult = useStaticQuery(graphql(ListProductsQuery));

In gatsby-node.mjs

The @amazeelabs/gatsby-plugin-operations package provides a graphqlQuery function that works within the createPages hook.

import { graphqlQuery } from '@amazeelabs/gatsby-plugin-operations';
import { ListPagesQuery } from '@custom/schema';

export const createPages({actions}) {
  const result = await graphqlQuery(ListPagesQuery);
  result.page.forEach((page) => {
    actions.createPage({});
  })
}