Allows to bypass SDL validation

Author: IvanGoncharov

src/utilities/__tests__/buildASTSchema-test.js

@@ -787,6 +787,24 @@ describe('Schema Builder', () => {
     const errors = validateSchema(schema);
     expect(errors.length).to.equal(0);
   });
+
+  it('Rejects invalid SDL', () => {
+    const doc = parse(`
+      type Query {
+        foo: String @unknown
+      }
+    `);
+    expect(() => buildASTSchema(doc)).to.throw('Unknown directive "unknown".');
+  });
+
+  it('Allows to disable SDL validation', () => {
+    const body = `
+      type Query {
+        foo: String @unknown
+      }
+    `;
+    buildSchema(body, { assumeValidSDL: true });
+  });
 });
 
 describe('Failures', () => {

src/utilities/__tests__/extendSchema-test.js

@@ -1018,6 +1018,22 @@ describe('extendSchema', () => {
     expect(isScalarType(arg1.type)).to.equal(true);
   });
 
+  it('Rejects invalid SDL', () => {
+    const sdl = `
+      extend schema @unknown
+    `;
+    expect(() => extendTestSchema(sdl)).to.throw(
+      'Unknown directive "unknown".',
+    );
+  });
+
+  it('Allows to disable SDL validation', () => {
+    const sdl = `
+      extend schema @unknown
+    `;
+    extendTestSchema(sdl, { assumeValidSDL: true });
+  });
+
   it('does not allow replacing a default directive', () => {
     const sdl = `
       directive @include(if: Boolean!) on FIELD | FRAGMENT_SPREAD

src/utilities/buildASTSchema.js

@@ -87,6 +87,13 @@ export type BuildSchemaOptions = {
    * Default: false
    */
   commentDescriptions?: boolean,
+
+  /**
+   * Set to true to assume the SDL is valid.
+   *
+   * Default: false
+   */
+  assumeValidSDL?: boolean,
 };
 
 /**
@@ -113,7 +120,9 @@ export function buildASTSchema(
     throw new Error('Must provide a document ast.');
   }
 
-  assertValidSDL(ast);
+  if (!options || !options.assumeValidSDL) {
+    assertValidSDL(ast);
+  }
 
   let schemaDef: ?SchemaDefinitionNode;
 

src/utilities/extendSchema.js

@@ -67,6 +67,13 @@ type Options = {|
    * Default: false
    */
   commentDescriptions?: boolean,
+
+  /**
+   * Set to true to assume the SDL is valid.
+   *
+   * Default: false
+   */
+  assumeValidSDL?: boolean,
 |};
 
 /**
@@ -99,7 +106,9 @@ export function extendSchema(
     'Must provide valid Document AST',
   );
 
-  assertValidSDLExtension(schema, documentAST);
+  if (!options || !options.assumeValidSDL) {
+    assertValidSDLExtension(schema, documentAST);
+  }
 
   // Collect the type definitions and extensions found in the document.
   const typeDefinitionMap = Object.create(null);