37 lines
906 B
Plaintext
37 lines
906 B
Plaintext
/**
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*
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* @flow
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* @format
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*/
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// flowlint ambiguous-object-type:error
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'use strict';
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const {create} = require('../core/Schema');
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import type {Schema} from '../core/Schema';
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import type {Source, DocumentNode} from 'graphql';
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const schemaCache: Map<Source, Schema> = new Map();
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function getSchemaInstance(
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getSchemaSource: () => Source,
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getSchemaExtensions: () => $ReadOnlyArray<DocumentNode>,
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schemaExtensions: $ReadOnlyArray<string>,
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): Schema {
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const source = getSchemaSource();
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let schema = schemaCache.get(source);
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if (schema == null) {
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schema = create(source, getSchemaExtensions(), schemaExtensions);
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schemaCache.set(source, schema);
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}
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return schema;
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}
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module.exports = getSchemaInstance;
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