diff --git a/src/components/cargo/cargo_manager.ts b/src/components/cargo/cargo_manager.ts
index d8ed344..7d56920 100644
--- a/src/components/cargo/cargo_manager.ts
+++ b/src/components/cargo/cargo_manager.ts
@@ -69,7 +69,7 @@ class UserDefinedArgs {
         const configuration = getConfiguration();
         const args = configuration.get<string[]>(property);
 
-        if (args === undefined) {
+        if (!args) {
             throw new Error(`Failed to get args for property=${property}`);
         }
 
@@ -465,7 +465,7 @@ export default class CargoManager {
 
         vscode.window.showQuickPick(playgroundProjectTypes)
             .then((playgroundProjectType: string | undefined) => {
-                if (playgroundProjectType === undefined) {
+                if (!playgroundProjectType) {
                     logger.debug('quick pick has been cancelled');
 
                     return;
diff --git a/src/components/cargo/custom_configuration_chooser.ts b/src/components/cargo/custom_configuration_chooser.ts
index d8f3741..a6333eb 100644
--- a/src/components/cargo/custom_configuration_chooser.ts
+++ b/src/components/cargo/custom_configuration_chooser.ts
@@ -36,7 +36,7 @@ export default class CustomConfigurationChooser {
 
         const customConfigurations = configuration.get<CustomConfiguration[]>(propertyName);
 
-        if (customConfigurations === undefined) {
+        if (!customConfigurations) {
             throw new Error(`No custom configurations for property=${propertyName}`);
         }
 
diff --git a/src/components/cargo/diagnostic_utils.ts b/src/components/cargo/diagnostic_utils.ts
index 9f6bf28..57b456a 100644
--- a/src/components/cargo/diagnostic_utils.ts
+++ b/src/components/cargo/diagnostic_utils.ts
@@ -28,7 +28,7 @@ export function addUniqueDiagnostic(diagnostic: FileDiagnostic, diagnostics: Dia
 
     const fileDiagnostics = diagnostics.get(uri);
 
-    if (fileDiagnostics === undefined) {
+    if (!fileDiagnostics) {
         // No diagnostics for the file
         // The diagnostic is unique
         diagnostics.set(uri, [diagnostic.diagnostic]);
@@ -51,5 +51,5 @@ export function isUniqueDiagnostic(diagnostic: Diagnostic, diagnostics: Diagnost
         return true;
     });
 
-    return foundDiagnostic === undefined;
+    return !foundDiagnostic;
 }
diff --git a/src/components/cargo/output_channel_task_manager.ts b/src/components/cargo/output_channel_task_manager.ts
index 5b13a47..7d6dc3d 100644
--- a/src/components/cargo/output_channel_task_manager.ts
+++ b/src/components/cargo/output_channel_task_manager.ts
@@ -63,7 +63,7 @@ export class OutputChannelTaskManager {
          * which differs from the directory containing Cargo.toml.
          */
         function prependArgsWithManifestPathIfRequired(): void {
-            if (cargoCwd === undefined || cargoCwd === cwd) {
+            if (!cargoCwd || cargoCwd === cwd) {
                 return;
             }
 
diff --git a/src/components/completion/completion_manager.ts b/src/components/completion/completion_manager.ts
index c33e4a9..8f83e23 100644
--- a/src/components/completion/completion_manager.ts
+++ b/src/components/completion/completion_manager.ts
@@ -233,7 +233,7 @@ export default class CompletionManager {
     }
 
     private stopDaemon(): void {
-        if (this.racerDaemon === undefined) {
+        if (!this.racerDaemon) {
             return;
         }
         this.racerDaemon.kill();
@@ -306,7 +306,7 @@ export default class CompletionManager {
                     : results.find(parts => parts[2] === word);
 
             // We actually found a completion instead of a definition, so we won't show the returned info.
-            if (result === undefined) {
+            if (!result) {
                 return undefined;
             }
 
@@ -547,7 +547,7 @@ export default class CompletionManager {
         // Get the first dangling parenthesis, so we don't stop on a function call used as a previous parameter
         const startPos = this.firstDanglingParen(document, position);
 
-        if (startPos === undefined) {
+        if (!startPos) {
             return undefined;
         }
 
@@ -566,7 +566,7 @@ export default class CompletionManager {
                 }
             }
 
-            if (parts === undefined) {
+            if (!parts) {
                 return undefined;
             }
 
@@ -654,7 +654,7 @@ export default class CompletionManager {
     }
 
     private runCommand(document: TextDocument, command: string, args: any[]): Promise<string[]> {
-        if (this.racerDaemon === undefined) {
+        if (!this.racerDaemon) {
             return Promise.reject(undefined);
         }
 
diff --git a/src/components/configuration/configuration_manager.ts b/src/components/configuration/configuration_manager.ts
index e083981..2e7d1fd 100644
--- a/src/components/configuration/configuration_manager.ts
+++ b/src/components/configuration/configuration_manager.ts
@@ -44,7 +44,7 @@ export class ConfigurationManager {
 
         const rlsConfiguration: any | null = configuration['rls'];
 
-        if (rlsConfiguration === null) {
+        if (!rlsConfiguration) {
             return undefined;
         }
 
@@ -236,8 +236,8 @@ export class ConfigurationManager {
             return envPath;
         }
 
-        if (rustcSysRoot === undefined) {
-            return;
+        if (!rustcSysRoot) {
+            return undefined;
         }
 
         if (!rustcSysRoot.includes('.rustup')) {
diff --git a/src/components/configuration/current_working_directory_manager.ts b/src/components/configuration/current_working_directory_manager.ts
index d39fd6c..83e24f2 100644
--- a/src/components/configuration/current_working_directory_manager.ts
+++ b/src/components/configuration/current_working_directory_manager.ts
@@ -45,7 +45,7 @@ export default class CurrentWorkingDirectoryManager {
     }
 
     private checkWorkspaceCanBeUsedAsCwd(): Promise<boolean> {
-        if (workspace.rootPath === undefined) {
+        if (!workspace.rootPath) {
             return Promise.resolve(false);
         }
 
@@ -61,7 +61,7 @@ export default class CurrentWorkingDirectoryManager {
 
         const fileName = window.activeTextEditor.document.fileName;
 
-        if (workspace.rootPath === undefined || !fileName.startsWith(workspace.rootPath)) {
+        if (!workspace.rootPath || !fileName.startsWith(workspace.rootPath)) {
             return Promise.reject(new Error('Current document not in the workspace'));
         }
 
@@ -72,11 +72,11 @@ export default class CurrentWorkingDirectoryManager {
         const opts = { cwd: cwd };
 
         return findUp('Cargo.toml', opts).then((cargoTomlDirPath: string) => {
-            if (cargoTomlDirPath === null) {
+            if (!cargoTomlDirPath) {
                 return Promise.reject(new Error('Cargo.toml hasn\'t been found'));
             }
 
-            if (workspace.rootPath === undefined || !cargoTomlDirPath.startsWith(workspace.rootPath)) {
+            if (!workspace.rootPath || !cargoTomlDirPath.startsWith(workspace.rootPath)) {
                 return Promise.reject(new Error('Cargo.toml hasn\'t been found within the workspace'));
             }
 
diff --git a/src/components/formatting/formatting_manager.ts b/src/components/formatting/formatting_manager.ts
index ebc6ea0..c46a1db 100644
--- a/src/components/formatting/formatting_manager.ts
+++ b/src/components/formatting/formatting_manager.ts
@@ -99,7 +99,7 @@ export default class FormattingManager implements DocumentFormattingEditProvider
                 currentFile = Uri.file(line.slice('Diff of '.length, -1));
             }
 
-            if (currentFile === undefined) {
+            if (!currentFile) {
                 continue;
             }
 
@@ -177,7 +177,7 @@ export default class FormattingManager implements DocumentFormattingEditProvider
                 continue;
             }
 
-            if (currentPatch === undefined) {
+            if (!currentPatch) {
                 continue;
             }
 
diff --git a/src/components/logging/root_logger.ts b/src/components/logging/root_logger.ts
index 4190b80..c1ee93d 100644
--- a/src/components/logging/root_logger.ts
+++ b/src/components/logging/root_logger.ts
@@ -38,7 +38,7 @@ export default class RootLogger extends Logger {
     }
 
     private log(message: string, severityAsString: string): void {
-        if (this.logFunction === undefined) {
+        if (!this.logFunction) {
             return;
         }
 
diff --git a/src/components/symbol_provision/symbol_information_parser.ts b/src/components/symbol_provision/symbol_information_parser.ts
index 8afe23f..390a759 100644
--- a/src/components/symbol_provision/symbol_information_parser.ts
+++ b/src/components/symbol_provision/symbol_information_parser.ts
@@ -32,7 +32,7 @@ export default class SymbolInformationParser {
         const symbolInformationList: (SymbolInformation | undefined)[] = rustSymbols.map(rustSymbol => {
             const kind = this.getSymbolKind(rustSymbol.kind);
 
-            if (kind === undefined) {
+            if (!kind) {
                 return undefined;
             }
 
diff --git a/src/extension.ts b/src/extension.ts
index 0ff2dfc..4188777 100644
--- a/src/extension.ts
+++ b/src/extension.ts
@@ -89,7 +89,7 @@ function addExecutingActionOnSave(
 
         const actionOnSave = configurationManager.getActionOnSave();
 
-        if (actionOnSave === null) {
+        if (!actionOnSave) {
             return;
         }
 
diff --git a/test/components/cargo/diagnostic_utils.test.ts b/test/components/cargo/diagnostic_utils.test.ts
index ab26578..73942d3 100644
--- a/test/components/cargo/diagnostic_utils.test.ts
+++ b/test/components/cargo/diagnostic_utils.test.ts
@@ -85,7 +85,7 @@ suite('Diagnostic Utils Tests', () => {
 
         const fileDiagnostics = diagnostics.get(Uri.file('/1'));
 
-        if (fileDiagnostics === undefined) {
+        if (!fileDiagnostics) {
             assert.notEqual(fileDiagnostics, undefined);
         } else {
             assert.equal(fileDiagnostics.length, 1);
@@ -109,7 +109,7 @@ suite('Diagnostic Utils Tests', () => {
 
             const fileDiagnostics = diagnostics.get(Uri.file('/1'));
 
-            if (fileDiagnostics === undefined) {
+            if (!fileDiagnostics) {
                 assert.notEqual(fileDiagnostics, undefined);
             } else {
                 assert.equal(fileDiagnostics.length, 3);
@@ -132,7 +132,7 @@ suite('Diagnostic Utils Tests', () => {
 
             const fileDiagnostics = diagnostics.get(Uri.file('/1'));
 
-            if (fileDiagnostics === undefined) {
+            if (!fileDiagnostics) {
                 assert.notEqual(fileDiagnostics, undefined);
             } else {
                 assert.equal(fileDiagnostics.length, 2);