@pyramation/postgraphile

Version:
A GraphQL schema created by reflection over a PostgreSQL schema 🐘 (previously known as PostGraphQL)
www.graphile.org/postgraphile/
41 lines • 3.35 kB
JavaScript
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const fs_1 = require("fs");
const graphql_1 = require("graphql");
const util_1 = require("util");
const readFile = util_1.promisify(fs_1.readFile);
const writeFile = util_1.promisify(fs_1.writeFile);
async function writeFileIfDiffers(path, contents) {
    let oldContents = null;
    try {
        oldContents = await readFile(path, 'utf8');
    }
    catch (e) {
        /* noop */
    }
    if (oldContents !== contents) {
        await writeFile(path, contents);
    }
}
/**
 * Exports a PostGraphile schema by looking at a Postgres client.
 */
async function exportPostGraphileSchema(schema, options = {}) {
    const jsonPath = typeof options.exportJsonSchemaPath === 'string' ? options.exportJsonSchemaPath : null;
    const graphqlPath = typeof options.exportGqlSchemaPath === 'string' ? options.exportGqlSchemaPath : null;
    // Sort schema, if requested
    const finalSchema = options.sortExport && graphql_1.lexicographicSortSchema && (jsonPath || graphqlPath)
        ? graphql_1.lexicographicSortSchema(schema)
        : schema;
    // JSON version
    if (jsonPath) {
        const result = await graphql_1.graphql(finalSchema, graphql_1.introspectionQuery);
        await writeFileIfDiffers(jsonPath, JSON.stringify(result, null, 2));
    }
    // Schema language version
    if (graphqlPath) {
        await writeFileIfDiffers(graphqlPath, graphql_1.printSchema(finalSchema));
    }
}
exports.default = exportPostGraphileSchema;
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