3 files changed, 6 insertions, 30 deletions
diff --git a/packages/assert/src/index.ts b/packages/assert/src/index.ts
index 051a741c5..56f663780 100644
--- a/packages/assert/src/index.ts
+++ b/packages/assert/src/index.ts
@@ -18,9 +18,6 @@ export const assert = {
             `${variableName} should be in baseUnits (no decimals), found value: ${value.toNumber()}`,
         );
     },
-    isUndefined(value: any, variableName?: string): void {
-        this.assert(_.isUndefined(value), this.typeAssertionMessage(variableName, 'undefined', value));
-    },
     isString(variableName: string, value: string): void {
         this.assert(_.isString(value), this.typeAssertionMessage(variableName, 'string', value));
     },
@@ -77,11 +74,11 @@ Validation errors: ${validationResult.errors.join(', ')}`;
         this.assert(!hasValidationErrors, msg);
     },
     isHttpUrl(variableName: string, value: any): void {
-        const isValidUrl = validUrl.isWebUri(value);
+        const isValidUrl = !_.isUndefined(validUrl.isWebUri(value));
         this.assert(isValidUrl, this.typeAssertionMessage(variableName, 'http url', value));
     },
     isUri(variableName: string, value: any): void {
-        const isValidUri = validUrl.isUri(value);
+        const isValidUri = !_.isUndefined(validUrl.isUri(value));
         this.assert(isValidUri, this.typeAssertionMessage(variableName, 'uri', value));
     },
     assert(condition: boolean, message: string): void {
diff --git a/packages/assert/test/assert_test.ts b/packages/assert/test/assert_test.ts
index 29344584a..ff337196d 100644
--- a/packages/assert/test/assert_test.ts
+++ b/packages/assert/test/assert_test.ts
@@ -22,16 +22,6 @@ describe('Assertions', () => {
             invalidInputs.forEach(input => expect(assert.isBigNumber.bind(assert, variableName, input)).to.throw());
         });
     });
-    describe('#isUndefined', () => {
-        it('should not throw for valid input', () => {
-            const validInputs = [undefined];
-            validInputs.forEach(input => expect(assert.isUndefined.bind(assert, input, variableName)).to.not.throw());
-        });
-        it('should throw for invalid input', () => {
-            const invalidInputs = ['test', 42, false, { random: 'test' }];
-            invalidInputs.forEach(input => expect(assert.isUndefined.bind(assert, input, variableName)).to.throw());
-        });
-    });
     describe('#isString', () => {
         it('should not throw for valid input', () => {
             const validInputs = ['hello', 'goodbye'];
@@ -44,7 +34,7 @@ describe('Assertions', () => {
     });
     describe('#isFunction', () => {
         it('should not throw for valid input', () => {
-            const validInputs = [BigNumber, assert.isString.bind(this)];
+            const validInputs = [BigNumber, assert.isString];
             validInputs.forEach(input => expect(assert.isFunction.bind(assert, variableName, input)).to.not.throw());
         });
         it('should throw for invalid input', () => {
diff --git a/packages/assert/tsconfig.json b/packages/assert/tsconfig.json
index 31bedfeb7..88a467ccb 100644
--- a/packages/assert/tsconfig.json
+++ b/packages/assert/tsconfig.json
@@ -1,18 +1,7 @@
 {
+    "extends": "../../tsconfig",
     "compilerOptions": {
-        "module": "commonjs",
-        "target": "es5",
-        "lib": ["es2017", "dom"],
-        "outDir": "lib",
-        "sourceMap": true,
-        "declaration": true,
-        "noImplicitAny": true,
-        "strictNullChecks": true
+        "outDir": "lib"
     },
-    "include": [
-        "./src/**/*",
-        "./test/**/*",
-        "../../node_modules/chai-typescript-typings/index.d.ts",
-        "../../node_modules/web3-typescript-typings/index.d.ts"
-    ]
+    "include": ["./src/**/*", "./test/**/*", "../../node_modules/chai-typescript-typings/index.d.ts"]
 }