[code-infra] Convert @mui/utils to typescript

packages-internal/test-utils/src/chai.types.ts

@@ -100,7 +100,7 @@ declare global {
        * Asserts that the given callback throws an error matching the given message in development (process.env.NODE_ENV !== 'production').
        * In production it expects a minified error.
        */
-      toThrowMinified(message: string): void;
+      toThrowMinified(message: string | RegExp): void;
     }
   }
 }

packages/mui-utils/src/capitalize/capitalize.test.js → packages/mui-utils/src/capitalize/capitalize.test.ts

@@ -8,6 +8,7 @@ describe('capitalize', () => {
 
   it('should throw when not used correctly', () => {
     expect(() => {
+      // @ts-expect-error Testing improper usage
       capitalize();
     }).toThrowMinified(/expects a string argument/);
   });

packages/mui-utils/src/debounce/debounce.test.js → packages/mui-utils/src/debounce/debounce.test.ts

@@ -3,7 +3,7 @@ import { spy, useFakeTimers } from 'sinon';
 import debounce from './debounce';
 
 describe('debounce', () => {
-  let clock;
+  let clock: ReturnType<typeof useFakeTimers>;
 
   beforeEach(() => {
     clock = useFakeTimers();
@@ -16,8 +16,8 @@ describe('debounce', () => {
   it('should debounce', () => {
     const handler = spy();
     const expectedContext = { foo: 'bar' };
-    let actualContext;
-    function collectContext(...args) {
+    let actualContext: any;
+    function collectContext(this: any, ...args: any[]) {
       // eslint-disable-next-line consistent-this
       actualContext = this;
       handler(...args);

packages/mui-utils/src/deprecatedPropType/deprecatedPropType.test.js → packages/mui-utils/src/deprecatedPropType/deprecatedPropType.test.ts

@@ -12,7 +12,7 @@ describe('deprecatedPropType', () => {
 
   it('should not warn', () => {
     const propName = `children${new Date()}`;
-    const props = {};
+    const props: Record<string, any> = {};
     PropTypes.checkPropTypes(
       {
         [propName]: deprecatedPropType(PropTypes.string, 'give me a reason'),
@@ -26,7 +26,7 @@ describe('deprecatedPropType', () => {
 
   it('should warn once', () => {
     const propName = `children`;
-    const props = {
+    const props: Record<string, any> = {
       [propName]: 'yolo',
     };
 

packages/mui-utils/src/deprecatedPropType/deprecatedPropType.js → packages/mui-utils/src/deprecatedPropType/deprecatedPropType.ts

@@ -1,9 +1,20 @@
-export default function deprecatedPropType(validator, reason) {
+import { Validator } from 'prop-types';
+
+export default function deprecatedPropType<T>(
+  validator: Validator<T>,
+  reason: string,
+): Validator<T> {
   if (process.env.NODE_ENV === 'production') {
     return () => null;
   }
 
-  return (props, propName, componentName, location, propFullName) => {
+  return (
+    props: Record<string, any>,
+    propName: string,
+    componentName?: string,
+    location?: string,
+    propFullName?: string,
+  ) => {
     const componentNameSafe = componentName || '<<anonymous>>';
     const propFullNameSafe = propFullName || propName;
 

packages/mui-utils/src/integerPropType/integerPropType.test.js → packages/mui-utils/src/integerPropType/integerPropType.test.tsx

@@ -9,7 +9,7 @@ describe('integerPropType', () => {
   const location = '';
   const componentName = 'DummyComponent';
 
-  function checkPropType(props, propName, required) {
+  function checkPropType(props: Record<string, any>, propName: string, required: boolean): void {
     PropTypes.checkPropTypes(
       {
         [propName]: required ? integerPropType.isRequired : integerPropType,
@@ -20,13 +20,21 @@ describe('integerPropType', () => {
     );
   }
 
-  function assertPass({ props }, propName, required = false) {
+  function assertPass(
+    { props }: { props: Record<string, any> },
+    propName: string,
+    required = false,
+  ): void {
     expect(() => {
       checkPropType(props, propName, required);
     }).not.toErrorDev();
   }
 
-  function assertFail({ props }, propName, required = false) {
+  function assertFail(
+    { props }: { props: Record<string, any> },
+    propName: string,
+    required = false,
+  ): void {
     const propType = getTypeByValue(props[propName]);
     const errorMessage = `Warning: Failed  type: Invalid ${location} \`${propName}\` of type \`${propType}\` supplied to \`${componentName}\`, expected \`integer\`.`;
 
@@ -41,36 +49,44 @@ describe('integerPropType', () => {
     });
 
     it('passes on undefined', () => {
+      // @ts-expect-error div doesn't have an a prop
       assertPass(<div a={undefined} />, 'a');
     });
 
     it('fails on null', () => {
+      // @ts-expect-error div doesn't have an a prop
       assertFail(<div a={null} />, 'a');
     });
   });
 
+  // @ts-expect-error div doesn't have an a prop
   it('passes on zero', () => assertPass(<div a={0} />, 'a'));
 
   it('passes on positive numbers', () => {
+    // @ts-expect-error div doesn't have an a prop
     assertPass(<div a={42} />, 'a');
   });
 
   describe('passes with the conversion before passing', () => {
     it('passes with conversion - parseInt', () => {
-      assertPass(<div a={parseInt(1.1, 10)} />, 'a');
+      // @ts-expect-error div doesn't have an a prop
+      assertPass(<div a={parseInt('1.1', 10)} />, 'a');
     });
 
     it('passes with the conversion - Math.floor', () => {
+      // @ts-expect-error div doesn't have an a prop
       assertPass(<div a={Math.floor(1.1)} />, 'a');
     });
 
     it('passes with the boolean conversion', () => {
+      // @ts-expect-error div doesn't have an a prop
       // eslint-disable-next-line no-bitwise
       assertPass(<div a={1.1 | 0} />, 'a');
     });
   });
 
   it('passes on negative numbers', () => {
+    // @ts-expect-error div doesn't have an a prop
     assertPass(<div a={-42} />, 'a');
   });
 
@@ -80,32 +96,39 @@ describe('integerPropType', () => {
     });
 
     it('fails when we pass float number', () => {
+      // @ts-expect-error div doesn't have an a prop
       assertFail(<div a={1.5} />, 'a');
     });
 
     it('fails when have been made computation which results in float number', () => {
+      // @ts-expect-error div doesn't have an a prop
       assertFail(<div a={(0.1 + 0.2) * 10} />, 'a');
     });
 
     it('fails on string', () => {
+      // @ts-expect-error div doesn't have an a prop
       assertFail(<div a={'a message'} />, 'a');
     });
 
     it('fails on boolean', () => {
+      // @ts-expect-error div doesn't have an a prop
       assertFail(<div a={false} />, 'a');
     });
 
     it('fails on array', () => {
+      // @ts-expect-error div doesn't have an a prop
       assertFail(<div a={[]} />, 'a');
     });
   });
 
   describe('fails on number edge cases', () => {
     it('fails on infinity', () => {
+      // @ts-expect-error div doesn't have an a prop
       assertFail(<div a={Infinity} />, 'a');
     });
 
     it('fails on NaN', () => {
+      // @ts-expect-error div doesn't have an a prop
       assertFail(<div a={NaN} />, 'a');
     });
   });

packages/mui-utils/src/integerPropType/integerPropType.js → packages/mui-utils/src/integerPropType/integerPropType.ts

@@ -1,4 +1,6 @@
-export function getTypeByValue(value) {
+import PropTypes from 'prop-types';
+
+export function getTypeByValue(value: any): string {
   const valueType = typeof value;
   switch (valueType) {
     case 'number':
@@ -24,7 +26,12 @@ export function getTypeByValue(value) {
   }
 }
 
-function requiredInteger(props, propName, componentName, location) {
+function requiredInteger(
+  props: Record<string, any>,
+  propName: string,
+  componentName: string,
+  location: string,
+): Error | null {
   const propValue = props[propName];
 
   if (propValue == null || !Number.isInteger(propValue)) {
@@ -38,21 +45,29 @@ function requiredInteger(props, propName, componentName, location) {
   return null;
 }
 
-function validator(props, propName, ...other) {
+function validator(
+  props: Record<string, any>,
+  propName: string,
+  componentName: string,
+  location: string,
+): Error | null {
   const propValue = props[propName];
 
   if (propValue === undefined) {
     return null;
   }
 
-  return requiredInteger(props, propName, ...other);
+  return requiredInteger(props, propName, componentName, location);
 }
 
-function validatorNoop() {
+function validatorNoop(): null {
   return null;
 }
 
 validator.isRequired = requiredInteger;
 validatorNoop.isRequired = validatorNoop;
 
-export default process.env.NODE_ENV === 'production' ? validatorNoop : validator;
+const integerPropType: PropTypes.Requireable<number> =
+  process.env.NODE_ENV === 'production' ? validatorNoop : validator;
+
+export default integerPropType;

packages/mui-utils/src/requirePropFactory/requirePropFactory.test.js → packages/mui-utils/src/requirePropFactory/requirePropFactory.test.tsx

@@ -4,7 +4,7 @@ import requirePropFactory from './requirePropFactory';
 
 describe('requirePropFactory', () => {
   const componentNameInError = 'componentNameInError';
-  let requireProp;
+  let requireProp: (prop: string) => PropTypes.Validator<any>;
 
   before(() => {
     requireProp = requirePropFactory(componentNameInError);
@@ -18,7 +18,7 @@ describe('requirePropFactory', () => {
   describe('requireProp()', () => {
     const requiredPropName = 'requiredPropName';
 
-    let requirePropValidator;
+    let requirePropValidator: PropTypes.Validator<any>;
 
     before(() => {
       requirePropValidator = requireProp(requiredPropName);
@@ -29,8 +29,8 @@ describe('requirePropFactory', () => {
     });
 
     describe('requirePropValidator', () => {
-      let props;
-      let propName;
+      let props: Record<string, unknown>;
+      let propName: string;
 
       beforeEach(() => {
         PropTypes.resetWarningCache();
@@ -71,13 +71,14 @@ describe('requirePropFactory', () => {
       });
 
       describe('propName is in props and requiredProp not in props', () => {
-        let result;
+        let result: Error | null;
 
         before(() => {
           props = {};
           propName = 'propName';
           props[propName] = true;
           delete props[requiredPropName];
+          // @ts-expect-error The validator should be called with the right arguments
           result = requirePropValidator(props, propName, undefined, undefined, undefined);
         });
 
@@ -97,19 +98,20 @@ describe('requirePropFactory', () => {
         });
 
         describe('propFullName given to validator', () => {
-          let propFullName;
+          let propFullName: string;
 
           before(() => {
             propFullName = 'propFullName';
+            // @ts-expect-error The validator should be called with the right arguments
             result = requirePropValidator(props, propName, undefined, undefined, propFullName);
           });
 
           it('returned error message should have propFullName', () => {
-            expect(result.message.includes(propFullName)).to.equal(true);
+            expect(result!.message.includes(propFullName)).to.equal(true);
           });
 
           it('returned error message should not have propName', () => {
-            expect(result.message.includes(propName)).to.equal(false);
+            expect(result!.message.includes(propName)).to.equal(false);
           });
         });
       });
@@ -122,7 +124,7 @@ describe('requirePropFactory', () => {
           test: PropTypes.string,
         };
 
-        const localProps = {};
+        const localProps: Record<string, unknown> = {};
         const localPropName = 'test';
         localProps[localPropName] = 'string';
 
@@ -150,7 +152,7 @@ describe('requirePropFactory', () => {
           test: PropTypes.string,
         };
 
-        const localProps = {};
+        const localProps: Record<string, unknown> = {};
         const localPropName = 'test';
         localProps[localPropName] = true;
 

packages/mui-utils/src/requirePropFactory/requirePropFactory.js → packages/mui-utils/src/requirePropFactory/requirePropFactory.ts

@@ -1,13 +1,19 @@
-export default function requirePropFactory(componentNameInError, Component) {
+import * as React from 'react';
+import PropTypes from 'prop-types';
+
+export default function requirePropFactory(
+  componentNameInError: string,
+  Component?: React.ComponentType<unknown>,
+): (requiredProp: string) => PropTypes.Validator<any> {
   if (process.env.NODE_ENV === 'production') {
-    return () => null;
+    return () => () => null;
   }
 
   // eslint-disable-next-line react/forbid-foreign-prop-types
   const prevPropTypes = Component ? { ...Component.propTypes } : null;
 
   const requireProp =
-    (requiredProp) =>
+    (requiredProp: string): PropTypes.Validator<any> =>
     (props, propName, componentName, location, propFullName, ...args) => {
       const propFullNameSafe = propFullName || propName;