Deprecate 'getFieldDefFn' arg of 'TypeInfo' and move it last

src/utilities/TypeInfo.d.ts

@@ -22,13 +22,12 @@ import {
 export class TypeInfo {
   constructor(
     schema: GraphQLSchema,
-    // NOTE: this experimental optional second parameter is only needed in order
-    // to support non-spec-compliant code bases. You should never need to use it.
-    // It may disappear in the future.
-    getFieldDefFn?: getFieldDef,
     // Initial type may be provided in rare cases to facilitate traversals
     // beginning somewhere other than documents.
     initialType?: GraphQLType,
+
+    // @deprecated will be removed in 17.0.0
+    getFieldDefFn?: getFieldDef,
   );
 
   getType(): Maybe<GraphQLOutputType>;

src/utilities/TypeInfo.js

@@ -55,13 +55,12 @@ export class TypeInfo {
 
   constructor(
     schema: GraphQLSchema,
-    // NOTE: this experimental optional second parameter is only needed in order
-    // to support non-spec-compliant code bases. You should never need to use it.
-    // It may disappear in the future.
-    getFieldDefFn?: typeof getFieldDef,
     // Initial type may be provided in rare cases to facilitate traversals
     // beginning somewhere other than documents.
-    initialType?: GraphQLType,
+    initialType?: ?GraphQLType,
+
+    // @deprecated will be removed in 17.0.0
+    getFieldDefFn?: typeof getFieldDef,
   ) {
     this._schema = schema;
     this._typeStack = [];

src/utilities/__tests__/TypeInfo-test.js

@@ -312,7 +312,7 @@ describe('visitWithTypeInfo', () => {
     const complexInputType = testSchema.getType('ComplexInput');
     invariant(complexInputType != null);
 
-    const typeInfo = new TypeInfo(testSchema, undefined, complexInputType);
+    const typeInfo = new TypeInfo(testSchema, complexInputType);
 
     const visited = [];
     visit(
@@ -357,7 +357,7 @@ describe('visitWithTypeInfo', () => {
     const humanType = testSchema.getType('Human');
     invariant(humanType != null);
 
-    const typeInfo = new TypeInfo(testSchema, undefined, humanType);
+    const typeInfo = new TypeInfo(testSchema, humanType);
 
     const ast = parse('{ name, pets { name } }');
     const operationNode = ast.definitions[0];

src/validation/__tests__/validation-test.js

@@ -53,10 +53,9 @@ describe('Validate: Supports full validation', () => {
     ]);
   });
 
-  // NOTE: experimental
-  it('validates using a custom TypeInfo', () => {
+  it('Deprecated: validates using a custom TypeInfo', () => {
     // This TypeInfo will never return a valid field.
-    const typeInfo = new TypeInfo(testSchema, () => null);
+    const typeInfo = new TypeInfo(testSchema, null, () => null);
 
     const doc = parse(`
       query {
@@ -71,7 +70,7 @@ describe('Validate: Supports full validation', () => {
       }
     `);
 
-    const errors = validate(testSchema, doc, undefined, typeInfo);
+    const errors = validate(testSchema, doc, undefined, undefined, typeInfo);
     const errorMessages = errors.map((err) => err.message);
 
     expect(errorMessages).to.deep.equal([
@@ -130,7 +129,7 @@ describe('Validate: Limit maximum number of validation errors', () => {
   const doc = parse(query, { noLocation: true });
 
   function validateDocument(options: {| maxErrors?: number |}) {
-    return validate(testSchema, doc, undefined, undefined, options);
+    return validate(testSchema, doc, undefined, options);
   }
 
   function invalidFieldError(fieldName: string) {
@@ -170,7 +169,7 @@ describe('Validate: Limit maximum number of validation errors', () => {
       };
     }
     expect(() =>
-      validate(testSchema, doc, [customRule], undefined, { maxErrors: 1 }),
+      validate(testSchema, doc, [customRule], { maxErrors: 1 }),
     ).to.throw(/^Error from custom rule!$/);
   });
 });

src/validation/validate.d.ts

@@ -30,8 +30,10 @@ export function validate(
   schema: GraphQLSchema,
   documentAST: DocumentNode,
   rules?: ReadonlyArray<ValidationRule>,
-  typeInfo?: TypeInfo,
   options?: { maxErrors?: number },
+
+  // @deprecate will be removed in 17.0.0
+  typeInfo?: TypeInfo,
 ): ReadonlyArray<GraphQLError>;
 
 /**

src/validation/validate.js

@@ -34,8 +34,10 @@ export function validate(
   schema: GraphQLSchema,
   documentAST: DocumentNode,
   rules: $ReadOnlyArray<ValidationRule> = specifiedRules,
-  typeInfo: TypeInfo = new TypeInfo(schema),
   options: {| maxErrors?: number |} = { maxErrors: undefined },
+
+  // @deprecate will be removed in 17.0.0
+  typeInfo: TypeInfo = new TypeInfo(schema),
 ): $ReadOnlyArray<GraphQLError> {
   devAssert(documentAST, 'Must provide document.');
   // If the schema used for validation is invalid, throw an error.