@magidoc/rollup-plugin-gql-schema/build/schema/parse.js

A Rollup and ViteJS plugin that allows to parse a GraphQL Schema from a target URL and save it to a target output folder, or to parse it from the disk and convert it to a desired format.

import glob from 'fast-glob';
import { readFile } from 'fs/promises';
import { buildSchema } from 'graphql';

async function parseGraphqlSchema(options) {
    const rawSchema = await readFullSchema(options.globPaths);
    try {
        return buildSchema(rawSchema);
    }
    catch (error) {
        throw new Error(`Unable to extract a GraphQL introspection from provided schema: ${String(error)}`, {
            cause: error,
        });
    }
}
async function readFullSchema(globPaths) {
    const paths = new Set((await Promise.all(globPaths.map((path) => readGlobPaths(path)))).flat());
    if (paths.size === 0) {
        throw new Error(`No paths found matching target glob patterns: [${globPaths.toString()}].\nIf you used relative paths, make sure the paths are relative to where the node command was launched or use absolute paths.`);
    }
    return (await Promise.all(Array.from(paths.values()).map((path) => readFile(path).then((buff) => buff.toString())))).join('\n\n');
}
async function readGlobPaths(globPath) {
    // Backslashes in windows paths are not supported by fast-glob
    return [...new Set(await glob(globPath.replaceAll('\\', '/'), { dot: true }))];
}

export { parseGraphqlSchema };
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