diff --git a/lib/rules/no-debug.js b/lib/rules/no-debug.js
index 417e052b..cfb4ba7f 100644
--- a/lib/rules/no-debug.js
+++ b/lib/rules/no-debug.js
@@ -45,6 +45,7 @@ module.exports = {
     }
 
     let hasImportedScreen = false;
+    let wildcardImportName = null;
 
     return {
       VariableDeclarator(node) {
@@ -85,19 +86,22 @@ module.exports = {
           hasImportedScreen = true;
         }
       },
-      ImportDeclaration(node) {
-        const screenModuleName = LIBRARY_MODULES_WITH_SCREEN.find(
-          module => module === node.source.value
-        );
+      // checks if import has shape:
+      // import { screen } from '@testing-library/dom';
+      'ImportDeclaration ImportSpecifier'(node) {
+        const importDeclarationNode = node.parent;
 
-        if (
-          screenModuleName &&
-          node.specifiers.some(
-            specifier => specifier.imported.name === 'screen'
-          )
-        ) {
-          hasImportedScreen = true;
-        }
+        if (!hasTestingLibraryImportModule(importDeclarationNode)) return;
+
+        hasImportedScreen = node.imported.name === 'screen';
+      },
+      // checks if import has shape:
+      // import * as dtl from '@testing-library/dom';
+      'ImportDeclaration ImportNamespaceSpecifier'(node) {
+        const importDeclarationNode = node.parent;
+        if (!hasTestingLibraryImportModule(importDeclarationNode)) return;
+
+        wildcardImportName = node.local && node.local.name;
       },
       [`CallExpression > Identifier[name="debug"]`](node) {
         if (hasDestructuredDebugStatement) {
@@ -108,11 +112,31 @@ module.exports = {
         }
       },
       [`CallExpression > MemberExpression > Identifier[name="debug"]`](node) {
-        if (
+        /*
+         check if `debug` used following the pattern:
+
+            import { screen } from '@testing-library/dom';
+            ...
+            screen.debug();
+        */
+        const isScreenDebugUsed =
           hasImportedScreen &&
           node.parent &&
-          node.parent.object.name === 'screen'
-        ) {
+          node.parent.object.name === 'screen';
+
+        /*
+         check if `debug` used following the pattern:
+
+            import * as dtl from '@testing-library/dom';
+            ...
+            dtl.debug();
+        */
+        const isNamespaceDebugUsed =
+          wildcardImportName &&
+          node.parent &&
+          node.parent.object.name === wildcardImportName;
+
+        if (isScreenDebugUsed || isNamespaceDebugUsed) {
           context.report({
             node,
             messageId: 'noDebug',
@@ -164,3 +188,9 @@ function isRenderVariableDeclarator(node, renderFunctions) {
 
   return false;
 }
+
+function hasTestingLibraryImportModule(importDeclarationNode) {
+  return LIBRARY_MODULES_WITH_SCREEN.some(
+    module => module === importDeclarationNode.source.value
+  );
+}
diff --git a/lib/rules/prefer-wait-for.js b/lib/rules/prefer-wait-for.js
index 0313922c..bf67bf43 100644
--- a/lib/rules/prefer-wait-for.js
+++ b/lib/rules/prefer-wait-for.js
@@ -61,8 +61,10 @@ module.exports = {
           methodName: node.name,
         },
         fix(fixer) {
-          const { parent } = node;
-          const [arg] = parent.arguments;
+          const callExpressionNode = findClosestCallExpressionNode(node);
+          const memberExpressionNode =
+            node.parent.type === 'MemberExpression' && node.parent;
+          const [arg] = callExpressionNode.arguments;
           const fixers = [];
 
           if (arg) {
@@ -79,7 +81,16 @@ module.exports = {
           } else {
             // if wait method been fixed didn't have any callback
             // then we replace the method name and include an empty callback.
-            fixers.push(fixer.replaceText(parent, 'waitFor(() => {})'));
+            let methodReplacement = 'waitFor(() => {})';
+
+            // if wait method used like `foo.wait()` then we need to keep the
+            // member expression to get `foo.waitFor(() => {})`
+            if (memberExpressionNode) {
+              methodReplacement = `${memberExpressionNode.object.name}.${methodReplacement}`;
+            }
+            const newText = methodReplacement;
+
+            fixers.push(fixer.replaceText(callExpressionNode, newText));
           }
 
           return fixers;
@@ -90,8 +101,11 @@ module.exports = {
     return {
       'ImportDeclaration[source.value=/testing-library/]'(node) {
         const importedNames = node.specifiers
-          .map(specifier => specifier.imported && specifier.imported.name)
-          .filter(Boolean);
+          .filter(
+            specifier =>
+              specifier.type === 'ImportSpecifier' && specifier.imported
+          )
+          .map(specifier => specifier.imported.name);
 
         if (
           importedNames.some(importedName =>
@@ -101,7 +115,7 @@ module.exports = {
           importNodes.push(node);
         }
       },
-      'CallExpression > Identifier[name=/^(wait|waitForElement|waitForDomChange)$/]'(
+      'CallExpression Identifier[name=/^(wait|waitForElement|waitForDomChange)$/]'(
         node
       ) {
         waitNodes.push(node);
@@ -118,3 +132,11 @@ module.exports = {
     };
   },
 };
+
+function findClosestCallExpressionNode(node) {
+  if (node.type === 'CallExpression') {
+    return node;
+  }
+
+  return findClosestCallExpressionNode(node.parent);
+}
diff --git a/tests/lib/rules/no-debug.js b/tests/lib/rules/no-debug.js
index 9b7ca4ad..de11f27e 100644
--- a/tests/lib/rules/no-debug.js
+++ b/tests/lib/rules/no-debug.js
@@ -75,6 +75,17 @@ ruleTester.run('no-debug', rule, {
     {
       code: `const { queries } = require('@testing-library/dom')`,
     },
+    {
+      code: `import * as dtl from '@testing-library/dom';
+        const foo = dtl.debug;
+      `,
+    },
+    {
+      code: `
+        import * as foo from '@somewhere/else';
+        foo.debug();
+      `,
+    },
     {
       code: `import { queries } from '@testing-library/dom'`,
     },
@@ -204,5 +215,18 @@ ruleTester.run('no-debug', rule, {
         },
       ],
     },
+    {
+      code: `
+        import * as dtl from '@testing-library/dom';
+        dtl.debug();
+      `,
+      errors: [
+        {
+          messageId: 'noDebug',
+          line: 3,
+          column: 13,
+        },
+      ],
+    },
   ],
 });
diff --git a/tests/lib/rules/prefer-wait-for.js b/tests/lib/rules/prefer-wait-for.js
index 85212e01..690c7564 100644
--- a/tests/lib/rules/prefer-wait-for.js
+++ b/tests/lib/rules/prefer-wait-for.js
@@ -22,6 +22,13 @@ ruleTester.run('prefer-wait-for', rule, {
         await waitForElementToBeRemoved(() => {});
       }`,
     },
+    {
+      code: `import * as testingLibrary from '@testing-library/foo';
+      
+      async () => {
+        await testingLibrary.waitForElementToBeRemoved(() => {});
+      }`,
+    },
     {
       code: `import { render } from '@testing-library/foo';
       import { waitForSomethingElse } from 'other-module';
@@ -30,6 +37,13 @@ ruleTester.run('prefer-wait-for', rule, {
         await waitForSomethingElse(() => {});
       }`,
     },
+    {
+      code: `import * as testingLibrary from '@testing-library/foo';
+
+      async () => {
+        await testingLibrary.waitFor(() => {}, { timeout: 500 });
+      }`,
+    },
   ],
 
   invalid: [
@@ -57,6 +71,46 @@ ruleTester.run('prefer-wait-for', rule, {
         await waitFor(() => {});
       }`,
     },
+    // namespaced wait should be fixed but not its import
+    {
+      code: `import * as testingLibrary from '@testing-library/foo';
+
+      async () => {
+        await testingLibrary.wait();
+      }`,
+      errors: [
+        {
+          messageId: 'preferWaitForMethod',
+          line: 4,
+          column: 30,
+        },
+      ],
+      output: `import * as testingLibrary from '@testing-library/foo';
+
+      async () => {
+        await testingLibrary.waitFor(() => {});
+      }`,
+    },
+    // namespaced waitForDomChange should be fixed but not its import
+    {
+      code: `import * as testingLibrary from '@testing-library/foo';
+
+      async () => {
+        await testingLibrary.waitForDomChange({ timeout: 500 });
+      }`,
+      errors: [
+        {
+          messageId: 'preferWaitForMethod',
+          line: 4,
+          column: 30,
+        },
+      ],
+      output: `import * as testingLibrary from '@testing-library/foo';
+
+      async () => {
+        await testingLibrary.waitFor(() => {}, { timeout: 500 });
+      }`,
+    },
     {
       // this import doesn't have trailing semicolon but fixer adds it
       code: `import { render, wait } from '@testing-library/foo'