diff --git a/examples/extension-wrapper/src/logger.ts b/examples/extension-wrapper/src/logger.ts
index 75bee38..0bcdd45 100644
--- a/examples/extension-wrapper/src/logger.ts
+++ b/examples/extension-wrapper/src/logger.ts
@@ -5,7 +5,7 @@ import { readFile as readFileCallback } from "fs";
 import { promisify } from "util";
 import { resolve } from "path";
 import { ok } from "assert";
-import { ExtensionContext, window, workspace } from "vscode";
+import { ExtensionContext, window } from "vscode";
 import { IChildLogger, IVSCodeExtLogger } from "@vscode-logging/types";
 import { configureLogger, NOOP_LOGGER } from "@vscode-logging/wrapper";
 
@@ -47,9 +47,7 @@ export async function initLogger(context: ExtensionContext): Promise<void> {
     logConsole: false,
     loggingLevelProp: LOGGING_LEVEL_PROP,
     sourceLocationProp: SOURCE_LOCATION_PROP,
-    subscriptions: context.subscriptions,
-    onDidChangeConfiguration: workspace.onDidChangeConfiguration,
-    getConfiguration: workspace.getConfiguration
+    subscriptions: context.subscriptions
   });
 
   setLogger(extLogger);
diff --git a/packages/wrapper/api.d.ts b/packages/wrapper/api.d.ts
index 7f440bc..8eddf63 100644
--- a/packages/wrapper/api.d.ts
+++ b/packages/wrapper/api.d.ts
@@ -1,4 +1,3 @@
-import { workspace, ExtensionContext } from "vscode";
 import { IVSCodeExtLogger } from "@vscode-logging/types";
 import { BasicOutputChannel } from "@vscode-logging/logger";
 
@@ -11,39 +10,29 @@ export declare const NOOP_LOGGER: IVSCodeExtLogger;
 
 export interface ConfigureLoggerOpts {
   /**
-   * @see {GetExtensionLoggerOpts.extName}
+   * @see {GetExtensionLoggerOpts.extName} in "@vscode-logging/logger"
    */
   extName: string;
   /**
-   * @see {GetExtensionLoggerOpts.logPath}
+   * @see {GetExtensionLoggerOpts.logPath} in "@vscode-logging/logger"
    */
   logPath: string;
   loggingLevelProp: string;
   sourceLocationProp: string;
   /**
-   * @see {GetExtensionLoggerOpts.logOutputChannel}
+   * @see {GetExtensionLoggerOpts.logOutputChannel} in "@vscode-logging/logger"
    */
   logOutputChannel?: BasicOutputChannel;
   /**
-   * @see {GetExtensionLoggerOpts.logConsole}
+   * @see {GetExtensionLoggerOpts.logConsole} in "@vscode-logging/logger"
    */
   logConsole?: boolean;
   /**
-   * The vscode's extension subscriptions
+   * The vscode extension's subscriptions
    * This is normally available via the `activate` function's `context`
    * parameter.
    */
-  subscriptions: ExtensionContext["subscriptions"];
-  /**
-   * The `vscode.workspace.getConfiguration` method.
-   * Note this is the method itself, not the returned value from executing it.
-   */
-  getConfiguration: typeof workspace.getConfiguration;
-  /**
-   * The `vscode.workspace.onDidChangeConfiguration` method.
-   * Note this is the method itself, not the returned value from executing it.
-   */
-  onDidChangeConfiguration: typeof workspace.onDidChangeConfiguration;
+  subscriptions: { dispose(): any }[];
 }
 
 /**
diff --git a/packages/wrapper/nyc.config.js b/packages/wrapper/nyc.config.js
new file mode 100644
index 0000000..a87fbf8
--- /dev/null
+++ b/packages/wrapper/nyc.config.js
@@ -0,0 +1,22 @@
+module.exports = {
+  reporter: ["text", "lcov"],
+  "check-coverage": false,
+  all: true,
+  include: ["dist/src/**/*.js"],
+  exclude: [
+    // The `api.ts` is the only file which imports("vscode")
+    // We could still test it (e.g: with `proxyquire`)
+    // However the added value of such a test is smaller than
+    // the overhead cost of implementing such a test:
+    // - The api.ts only
+    //   1. Import needed params from `vscode` package.
+    //   2. merges user arguments with `vscode` params and calls an internal API.
+    //
+    // - These merges are partially "tested" at design time by TSC.
+    // - Implementing a test with proxyquire would not test real VSCode scenarios
+    // - The existing `configureLogger` tests are fairly complex and we are better off avoiding duplicating them.
+    //   - See: `configure-logger-spec.ts`.
+    "dist/src/api.js"
+  ],
+  excludeAfterRemap: false
+};
diff --git a/packages/wrapper/package.json b/packages/wrapper/package.json
index 6f7ea2f..3fbbd2b 100644
--- a/packages/wrapper/package.json
+++ b/packages/wrapper/package.json
@@ -17,11 +17,11 @@
   "license": "Apache-2.0",
   "typings": "./api.d.ts",
   "dependencies": {
-    "@types/vscode": "1.52.0",
     "@vscode-logging/logger": "^1.2.1",
     "@vscode-logging/types": "^0.1.3"
   },
   "devDependencies": {
+    "@types/vscode": "1.52.0",
     "@types/lodash": "^4.14.167",
     "lodash": "^4.17.20"
   },
diff --git a/packages/wrapper/src/api.ts b/packages/wrapper/src/api.ts
index f311f8b..ce41d08 100644
--- a/packages/wrapper/src/api.ts
+++ b/packages/wrapper/src/api.ts
@@ -1,2 +1,25 @@
-export { configureLogger } from "./configure-logger";
+/**
+ * This is the only file in the `src` folder we import("vscode")
+ * The rest of the code is implemented with Dependency Injection to
+ * the relevant VSCode APIs to enable easier testing.
+ */
+import { workspace } from "vscode";
+import { configureLoggerInternal } from "./configure-logger";
+import { BasicOutputChannel } from "@vscode-logging/logger";
 export { NOOP_LOGGER } from "./noop-logger";
+
+export function configureLogger(opts: {
+  extName: string;
+  logPath: string;
+  loggingLevelProp: string;
+  sourceLocationProp: string;
+  logOutputChannel?: BasicOutputChannel;
+  logConsole?: boolean;
+  subscriptions: { dispose(): any }[];
+}) {
+  return configureLoggerInternal({
+    ...opts,
+    getConfiguration: workspace.getConfiguration,
+    onDidChangeConfiguration: workspace.onDidChangeConfiguration
+  });
+}
diff --git a/packages/wrapper/src/configure-logger.ts b/packages/wrapper/src/configure-logger.ts
index 4158220..395b4e7 100644
--- a/packages/wrapper/src/configure-logger.ts
+++ b/packages/wrapper/src/configure-logger.ts
@@ -1,3 +1,4 @@
+import { workspace } from "vscode";
 import { getExtensionLogger } from "@vscode-logging/logger";
 import { IVSCodeExtLogger } from "@vscode-logging/types";
 import { ConfigureLoggerOpts } from "../api";
@@ -10,7 +11,25 @@ import {
   logLoggerDetails
 } from "./settings-changes-handler";
 
-export function configureLogger(opts: ConfigureLoggerOpts): IVSCodeExtLogger {
+export type ConfigureLoggerDIOpts = {
+  /**
+   * The `vscode.workspace.getConfiguration` method.
+   * Note this is the method itself, not the returned value from executing it.
+   */
+  getConfiguration: typeof workspace.getConfiguration;
+  /**
+   * The `vscode.workspace.onDidChangeConfiguration` method.
+   * Note this is the method itself, not the returned value from executing it.
+   */
+  onDidChangeConfiguration: typeof workspace.onDidChangeConfiguration;
+};
+
+export type configureLoggerInternalOpts = ConfigureLoggerOpts &
+  ConfigureLoggerDIOpts;
+
+export function configureLoggerInternal(
+  opts: configureLoggerInternalOpts
+): IVSCodeExtLogger {
   const logLevelSetting = getLoggingLevelSetting({
     getConfiguration: opts.getConfiguration,
     loggingLevelProp: opts.loggingLevelProp
diff --git a/packages/wrapper/test/configure-logger-spec.ts b/packages/wrapper/test/configure-logger-spec.ts
index 2abbde5..4a2cc1b 100644
--- a/packages/wrapper/test/configure-logger-spec.ts
+++ b/packages/wrapper/test/configure-logger-spec.ts
@@ -2,17 +2,17 @@ import { expect } from "chai";
 import { ExtensionContext, WorkspaceConfiguration } from "vscode";
 import { IChildLogger, LogLevel } from "@vscode-logging/types";
 import { BasicOutputChannel } from "@vscode-logging/logger";
-import { configureLogger } from "../src/api";
-import { ConfigureLoggerOpts } from "../api";
+import { configureLoggerInternal } from "../src/configure-logger";
+import { configureLoggerInternalOpts } from "../src/configure-logger";
 
 describe("The `configureLogger` main wrapper utility function", () => {
   let outputChannelMock: BasicOutputChannel;
   let subscriptions: ExtensionContext["subscriptions"];
-  let onDidChangeConfiguration: ConfigureLoggerOpts["onDidChangeConfiguration"];
+  let onDidChangeConfiguration: configureLoggerInternalOpts["onDidChangeConfiguration"];
   let loggingLevelProp: string;
   let sourceLocationProp: string;
   let configLogLevel: LogLevel;
-  let getConfiguration: ConfigureLoggerOpts["getConfiguration"];
+  let getConfiguration: configureLoggerInternalOpts["getConfiguration"];
   let loggedLines: Record<string, unknown>[];
 
   beforeEach(() => {
@@ -47,7 +47,7 @@ describe("The `configureLogger` main wrapper utility function", () => {
   });
 
   function configureLoggerHelper(): IChildLogger {
-    return configureLogger({
+    return configureLoggerInternal({
       extName: "my_vscode_ext",
       // only logging "in memory" during our test.
       logPath: (undefined as unknown) as string,
diff --git a/packages/wrapper/test/noop-logger-spec.ts b/packages/wrapper/test/noop-logger-spec.ts
index 612b193..5d176b6 100644
--- a/packages/wrapper/test/noop-logger-spec.ts
+++ b/packages/wrapper/test/noop-logger-spec.ts
@@ -25,6 +25,10 @@ describe("The no-operation logger", () => {
     );
   });
 
+  it("will not throw when executing the NOOP function", () => {
+    expect(noop()).to.not.throw;
+  });
+
   it("implements <getChildLogger> by returning 'itself'", () => {
     expect(NOOP_LOGGER.getChildLogger({ label: "foo" })).to.equal(NOOP_LOGGER);
   });
diff --git a/packages/wrapper/test/settings-changes-handler-spec.ts b/packages/wrapper/test/settings-changes-handler-spec.ts
index 67e1043..29658bb 100644
--- a/packages/wrapper/test/settings-changes-handler-spec.ts
+++ b/packages/wrapper/test/settings-changes-handler-spec.ts
@@ -1,14 +1,13 @@
 import { expect } from "chai";
 import {
   ConfigurationChangeEvent,
-  ConfigurationScope,
   Disposable,
   ExtensionContext,
   WorkspaceConfiguration
 } from "vscode";
 import { LogLevel } from "@vscode-logging/logger";
 import { IChildLogger, IVSCodeExtLogger } from "@vscode-logging/types";
-import { ConfigureLoggerOpts } from "../api";
+import { configureLoggerInternalOpts } from "../src/configure-logger";
 import { listenToLogSettingsChanges } from "../src/settings-changes-handler";
 
 describe("The `listenToLogSettingsChanges` utility function", () => {
@@ -16,8 +15,8 @@ describe("The `listenToLogSettingsChanges` utility function", () => {
   let loggingLevelProp: string;
   let sourceLocationProp: string;
   let logPath: string;
-  let getConfiguration: ConfigureLoggerOpts["getConfiguration"];
-  let onDidChangeConfiguration: ConfigureLoggerOpts["onDidChangeConfiguration"];
+  let getConfiguration: configureLoggerInternalOpts["getConfiguration"];
+  let onDidChangeConfiguration: configureLoggerInternalOpts["onDidChangeConfiguration"];
   let subscriptions: ExtensionContext["subscriptions"];
   let currentLogLevel: LogLevel;
   let currentSourceLocationTracking: boolean;