diff --git a/.eslintrc.js b/.eslintrc.js
index c842db401..6851d9566 100644
--- a/.eslintrc.js
+++ b/.eslintrc.js
@@ -81,6 +81,7 @@ module.exports = {
       files: [
         'app/**/*.js',
         'shared/**/*.js',
+        'shared/**/*.ts',
         'ui/**/*.js',
         '**/*.test.js',
         'test/lib/**/*.js',
@@ -272,6 +273,7 @@ module.exports = {
         'app/scripts/platforms/*.test.js',
         'development/**/*.test.js',
         'shared/**/*.test.js',
+        'shared/**/*.test.ts',
         'test/helpers/*.js',
         'test/jest/*.js',
         'ui/**/*.test.js',
diff --git a/shared/modules/Numeric.test.ts b/shared/modules/Numeric.test.ts
index 2786bec91..33e8f4ee2 100644
--- a/shared/modules/Numeric.test.ts
+++ b/shared/modules/Numeric.test.ts
@@ -10,98 +10,98 @@ const ONE_WEI = new Numeric(1, 10, EtherDenomination.WEI);
 describe('Numeric', () => {
   describe('Basic Numeric Construction', () => {
     describe('From hexadeciaml strings', () => {
-      it('Should create a new Numeric from a hexadecimal string', () => {
+      it('should create a new Numeric from a hexadecimal string', () => {
         const numeric = new Numeric('0xa', 16);
-        expect(numeric.value).toEqual(new BigNumber(10, 10));
+        expect(numeric.value).toStrictEqual(new BigNumber(10, 10));
       });
 
-      it('Should create a new Numeric from a hexadecimal string with a decimal', () => {
+      it('should create a new Numeric from a hexadecimal string with a decimal', () => {
         const numeric = new Numeric('0xa.7', 16);
-        expect(numeric.value).toEqual(new BigNumber(10.4375, 10));
+        expect(numeric.value).toStrictEqual(new BigNumber(10.4375, 10));
       });
 
-      it('Should create a new Numeric from a hexadecimal string with negation', () => {
+      it('should create a new Numeric from a hexadecimal string with negation', () => {
         const numeric = new Numeric('-0xa', 16);
-        expect(numeric.value).toEqual(new BigNumber(-10, 10));
+        expect(numeric.value).toStrictEqual(new BigNumber(-10, 10));
       });
 
-      it('Should create a new Numeric from a hexadecimal string with negation and decimal', () => {
+      it('should create a new Numeric from a hexadecimal string with negation and decimal', () => {
         const numeric = new Numeric('-0xa.7', 16);
-        expect(numeric.value).toEqual(new BigNumber(-10.4375, 10));
+        expect(numeric.value).toStrictEqual(new BigNumber(-10.4375, 10));
       });
     });
 
     describe('From decimal strings', () => {
-      it('Should create a new Numeric from a decimal string', () => {
+      it('should create a new Numeric from a decimal string', () => {
         const numeric = new Numeric('10', 10);
-        expect(numeric.value).toEqual(new BigNumber(10, 10));
+        expect(numeric.value).toStrictEqual(new BigNumber(10, 10));
       });
 
-      it('Should create a new Numeric from a decimal string with a decimal', () => {
+      it('should create a new Numeric from a decimal string with a decimal', () => {
         const numeric = new Numeric('10.4375', 10);
-        expect(numeric.value).toEqual(new BigNumber(10.4375, 10));
+        expect(numeric.value).toStrictEqual(new BigNumber(10.4375, 10));
       });
 
-      it('Should create a new Numeric from a decimal string with negation', () => {
+      it('should create a new Numeric from a decimal string with negation', () => {
         const numeric = new Numeric('-10', 10);
-        expect(numeric.value).toEqual(new BigNumber(-10, 10));
+        expect(numeric.value).toStrictEqual(new BigNumber(-10, 10));
       });
 
-      it('Should create a new Numeric from a decimal string with negation and decimal', () => {
+      it('should create a new Numeric from a decimal string with negation and decimal', () => {
         const numeric = new Numeric('-10.4375', 10);
-        expect(numeric.value).toEqual(new BigNumber(-10.4375, 10));
+        expect(numeric.value).toStrictEqual(new BigNumber(-10.4375, 10));
       });
     });
 
     describe('From decimal numbers', () => {
-      it('Should create a new Numeric from a hexadecimal number', () => {
+      it('should create a new Numeric from a hexadecimal number', () => {
         const numeric = new Numeric(10, 10);
-        expect(numeric.value).toEqual(new BigNumber(10, 10));
+        expect(numeric.value).toStrictEqual(new BigNumber(10, 10));
       });
 
-      it('Should create a new Numeric from a hexadecimal string with a decimal', () => {
+      it('should create a new Numeric from a hexadecimal string with a decimal', () => {
         const numeric = new Numeric(10.4375, 10);
-        expect(numeric.value).toEqual(new BigNumber(10.4375, 10));
+        expect(numeric.value).toStrictEqual(new BigNumber(10.4375, 10));
       });
 
-      it('Should create a new Numeric from a hexadecimal string with negation', () => {
+      it('should create a new Numeric from a hexadecimal string with negation', () => {
         const numeric = new Numeric(-10, 10);
-        expect(numeric.value).toEqual(new BigNumber(-10, 10));
+        expect(numeric.value).toStrictEqual(new BigNumber(-10, 10));
       });
 
-      it('Should create a new Numeric from a hexadecimal string with negation and decimal', () => {
+      it('should create a new Numeric from a hexadecimal string with negation and decimal', () => {
         const numeric = new Numeric(-10.4375, 16);
-        expect(numeric.value).toEqual(new BigNumber(-10.4375, 10));
+        expect(numeric.value).toStrictEqual(new BigNumber(-10.4375, 10));
       });
     });
 
     describe('From BigNumbers or BN', () => {
-      it('Should create a new Numeric from a BigNumber', () => {
+      it('should create a new Numeric from a BigNumber', () => {
         const numeric = new Numeric(new BigNumber(100, 10));
-        expect(numeric.value).toEqual(new BigNumber(100, 10));
+        expect(numeric.value).toStrictEqual(new BigNumber(100, 10));
       });
 
-      it('Should create a new Numeric from a BN', () => {
+      it('should create a new Numeric from a BN', () => {
         const numeric = new Numeric(new BN(100, 10), 10);
-        expect(numeric.value).toEqual(new BigNumber(100, 10));
+        expect(numeric.value).toStrictEqual(new BigNumber(100, 10));
       });
     });
   });
 
   describe('Error checking', () => {
-    it('Should throw an error for a non numeric string', () => {
+    it('should throw an error for a non numeric string', () => {
       expect(() => new Numeric('Hello there', 10)).toThrow(
         'String provided to stringToBigNumber is not a hexadecimal or decimal string: Hello there, 10',
       );
     });
 
-    it('Should throw an error for a numeric string without a base', () => {
+    it('should throw an error for a numeric string without a base', () => {
       expect(() => new Numeric('10')).toThrow(
         'You must specify the base of the provided number if the value is not already a BigNumber',
       );
     });
 
-    it('Should throw an error for a non numeric type', () => {
+    it('should throw an error for a non numeric type', () => {
       expect(() => new Numeric(true as unknown as number, 10)).toThrow(
         'Value: true is not a string, number, BigNumber or BN. Type is: boolean.',
       );
@@ -109,454 +109,474 @@ describe('Numeric', () => {
   });
 
   describe('Erroneous behaviors that we are temporarily continuing', () => {
-    it('Handles values that are undefined, setting the value to 0', () => {
-      expect(new Numeric(undefined as unknown as number).toString()).toEqual(
-        '0',
-      );
+    it('handles values that are undefined, setting the value to 0', () => {
+      expect(
+        new Numeric(undefined as unknown as number).toString(),
+      ).toStrictEqual('0');
     });
 
-    it('Handles values that are NaN, setting the value to 0', () => {
-      expect(new Numeric(NaN).toString()).toEqual('0');
+    it('handles values that are NaN, setting the value to 0', () => {
+      expect(new Numeric(NaN).toString()).toStrictEqual('0');
     });
   });
 
   describe('Ether denomination conversion', () => {
     it('should convert 1 ETH to 1000000000 GWEI', () => {
-      expect(ONE_ETH.toDenomination(EtherDenomination.GWEI).toString()).toEqual(
-        '1000000000',
-      );
+      expect(
+        ONE_ETH.toDenomination(EtherDenomination.GWEI).toString(),
+      ).toStrictEqual('1000000000');
     });
 
     it('should convert 1 ETH to 1000000000000000000 WEI', () => {
-      expect(ONE_ETH.toDenomination(EtherDenomination.WEI).toString()).toEqual(
-        '1000000000000000000',
-      );
+      expect(
+        ONE_ETH.toDenomination(EtherDenomination.WEI).toString(),
+      ).toStrictEqual('1000000000000000000');
     });
 
     it('should convert 1 GWEI to 0.000000001 ETH', () => {
-      expect(ONE_GWEI.toDenomination(EtherDenomination.ETH).toString()).toEqual(
-        '0.000000001',
-      );
+      expect(
+        ONE_GWEI.toDenomination(EtherDenomination.ETH).toString(),
+      ).toStrictEqual('0.000000001');
     });
 
     it('should convert 1 GWEI to 1000000000 WEI', () => {
-      expect(ONE_GWEI.toDenomination(EtherDenomination.WEI).toString()).toEqual(
-        '1000000000',
-      );
+      expect(
+        ONE_GWEI.toDenomination(EtherDenomination.WEI).toString(),
+      ).toStrictEqual('1000000000');
     });
 
     it('should convert 1 WEI to 0 ETH due to rounding', () => {
-      expect(ONE_WEI.toDenomination(EtherDenomination.ETH).toString()).toEqual(
-        '0',
-      );
+      expect(
+        ONE_WEI.toDenomination(EtherDenomination.ETH).toString(),
+      ).toStrictEqual('0');
     });
 
     it('should convert 1 WEI to 0.000000001 GWEI', () => {
-      expect(ONE_WEI.toDenomination(EtherDenomination.GWEI).toString()).toEqual(
-        '0.000000001',
-      );
+      expect(
+        ONE_WEI.toDenomination(EtherDenomination.GWEI).toString(),
+      ).toStrictEqual('0.000000001');
     });
   });
 
   describe('Math operations', () => {
     describe('Multiplication', () => {
-      it('Should compute correct results for simple multiplication', () => {
-        expect(new Numeric(5, 10).times(5, 10).toNumber()).toEqual(25);
+      it('should compute correct results for simple multiplication', () => {
+        expect(new Numeric(5, 10).times(5, 10).toNumber()).toStrictEqual(25);
 
         expect(
           new Numeric(5, 10).times(new Numeric(10, 10)).toNumber(),
-        ).toEqual(50);
+        ).toStrictEqual(50);
 
         expect(
           new Numeric(25, 10).times(new Numeric(10, 10)).toNumber(),
-        ).toEqual(250);
+        ).toStrictEqual(250);
       });
 
-      it('Should compute correct results for multiplication of big numbers', () => {
+      it('should compute correct results for multiplication of big numbers', () => {
         expect(
           new Numeric('175671432', 10).times('686216', 10).toString(),
-        ).toEqual('120548547381312');
+        ).toStrictEqual('120548547381312');
 
         expect(
           new Numeric('1756714320', 10)
             .times(new Numeric('686216', 10))
             .toString(),
-        ).toEqual('1205485473813120');
+        ).toStrictEqual('1205485473813120');
 
         expect(
           new Numeric('41756714320', 10)
             .times(new Numeric('6862160', 10))
             .toString(),
-        ).toEqual('286541254738131200');
+        ).toStrictEqual('286541254738131200');
       });
 
-      it('Should compute correct results for multiplication of negative big numbers', () => {
+      it('should compute correct results for multiplication of negative big numbers', () => {
         expect(
           new Numeric('175671432', 10).times('-686216', 10).toString(),
-        ).toEqual('-120548547381312');
+        ).toStrictEqual('-120548547381312');
 
         expect(
           new Numeric('1756714320', 10)
             .times(new Numeric('-686216', 10))
             .toString(),
-        ).toEqual('-1205485473813120');
+        ).toStrictEqual('-1205485473813120');
 
         expect(
           new Numeric('-41756714320', 10)
             .times(new Numeric('-6862160', 10))
             .toString(),
-        ).toEqual('286541254738131200');
+        ).toStrictEqual('286541254738131200');
       });
     });
 
     describe('Division', () => {
-      it('Should compute correct results for simple division', () => {
-        expect(new Numeric(25, 10).divide(5, 10).toNumber()).toEqual(5);
+      it('should compute correct results for simple division', () => {
+        expect(new Numeric(25, 10).divide(5, 10).toNumber()).toStrictEqual(5);
 
         expect(
           new Numeric(50, 10).divide(new Numeric(10, 10)).toNumber(),
-        ).toEqual(5);
+        ).toStrictEqual(5);
 
         expect(
           new Numeric(250, 10).divide(new Numeric(10, 10)).toNumber(),
-        ).toEqual(25);
+        ).toStrictEqual(25);
       });
 
-      it('Should compute correct results for division of big numbers', () => {
+      it('should compute correct results for division of big numbers', () => {
         expect(
           new Numeric('175671432', 10).divide('686216', 10).toString(),
-        ).toEqual('256.00019818832554181191');
+        ).toStrictEqual('256.00019818832554181191');
 
         expect(
           new Numeric('1756714320', 10)
             .divide(new Numeric('686216', 10))
             .toString(),
-        ).toEqual('2560.00198188325541811908');
+        ).toStrictEqual('2560.00198188325541811908');
 
         expect(
           new Numeric('41756714320', 10)
             .divide(new Numeric('6862160', 10))
             .toString(),
-        ).toEqual('6085.06859647691106007438');
+        ).toStrictEqual('6085.06859647691106007438');
       });
 
-      it('Should compute correct results for division of negative big numbers', () => {
+      it('should compute correct results for division of negative big numbers', () => {
         expect(
           new Numeric('175671432', 10).divide('-686216', 10).toString(),
-        ).toEqual('-256.00019818832554181191');
+        ).toStrictEqual('-256.00019818832554181191');
 
         expect(
           new Numeric('1756714320', 10)
             .divide(new Numeric('-686216', 10))
             .toString(),
-        ).toEqual('-2560.00198188325541811908');
+        ).toStrictEqual('-2560.00198188325541811908');
 
         expect(
           new Numeric('-41756714320', 10)
             .divide(new Numeric('-6862160', 10))
             .toString(),
-        ).toEqual('6085.06859647691106007438');
+        ).toStrictEqual('6085.06859647691106007438');
       });
     });
 
     describe('Addition', () => {
-      it('Should compute correct results for simple addition', () => {
-        expect(new Numeric(25, 10).add(5, 10).toNumber()).toEqual(30);
+      it('should compute correct results for simple addition', () => {
+        expect(new Numeric(25, 10).add(5, 10).toNumber()).toStrictEqual(30);
 
-        expect(new Numeric(50, 10).add(new Numeric(10, 10)).toNumber()).toEqual(
-          60,
-        );
+        expect(
+          new Numeric(50, 10).add(new Numeric(10, 10)).toNumber(),
+        ).toStrictEqual(60);
 
         expect(
           new Numeric(250, 10).add(new Numeric(100, 10)).toNumber(),
-        ).toEqual(350);
+        ).toStrictEqual(350);
       });
 
-      it('Should compute correct results for addition of big numbers', () => {
+      it('should compute correct results for addition of big numbers', () => {
         expect(
           new Numeric('175671432', 10).add('686216', 10).toString(),
-        ).toEqual('176357648');
+        ).toStrictEqual('176357648');
 
         expect(
           new Numeric('1756714320', 10)
             .add(new Numeric('686216', 10))
             .toString(),
-        ).toEqual('1757400536');
+        ).toStrictEqual('1757400536');
 
         expect(
           new Numeric('41756714320', 10)
             .add(new Numeric('6862160', 10))
             .toString(),
-        ).toEqual('41763576480');
+        ).toStrictEqual('41763576480');
       });
 
-      it('Should compute correct results for addition of negative big numbers', () => {
+      it('should compute correct results for addition of negative big numbers', () => {
         expect(
           new Numeric('175671432', 10).add('-686216', 10).toString(),
-        ).toEqual('174985216');
+        ).toStrictEqual('174985216');
 
         expect(
           new Numeric('1756714320', 10)
             .add(new Numeric('-686216', 10))
             .toString(),
-        ).toEqual('1756028104');
+        ).toStrictEqual('1756028104');
 
         expect(
           new Numeric('-41756714320', 10)
             .add(new Numeric('-6862160', 10))
             .toString(),
-        ).toEqual('-41763576480');
+        ).toStrictEqual('-41763576480');
       });
     });
 
     describe('Subtraction', () => {
-      it('Should compute correct results for simple subtraction', () => {
-        expect(new Numeric(25, 10).minus(5, 10).toNumber()).toEqual(20);
+      it('should compute correct results for simple subtraction', () => {
+        expect(new Numeric(25, 10).minus(5, 10).toNumber()).toStrictEqual(20);
 
         expect(
           new Numeric(50, 10).minus(new Numeric(10, 10)).toNumber(),
-        ).toEqual(40);
+        ).toStrictEqual(40);
 
         expect(
           new Numeric(250, 10).minus(new Numeric(100, 10)).toNumber(),
-        ).toEqual(150);
+        ).toStrictEqual(150);
       });
 
-      it('Should compute correct results for subtraction of big numbers', () => {
+      it('should compute correct results for subtraction of big numbers', () => {
         expect(
           new Numeric('175671432', 10).minus('686216', 10).toString(),
-        ).toEqual('174985216');
+        ).toStrictEqual('174985216');
 
         expect(
           new Numeric('1756714320', 10)
             .minus(new Numeric('686216', 10))
             .toString(),
-        ).toEqual('1756028104');
+        ).toStrictEqual('1756028104');
 
         expect(
           new Numeric('41756714320', 10)
             .minus(new Numeric('6862160', 10))
             .toString(),
-        ).toEqual('41749852160');
+        ).toStrictEqual('41749852160');
       });
 
-      it('Should compute correct results for subtraction of negative big numbers', () => {
+      it('should compute correct results for subtraction of negative big numbers', () => {
         expect(
           new Numeric('175671432', 10).minus('-686216', 10).toString(),
-        ).toEqual('176357648');
+        ).toStrictEqual('176357648');
 
         expect(
           new Numeric('1756714320', 10)
             .minus(new Numeric('-686216', 10))
             .toString(),
-        ).toEqual('1757400536');
+        ).toStrictEqual('1757400536');
 
         expect(
           new Numeric('-41756714320', 10)
             .minus(new Numeric('-6862160', 10))
             .toString(),
-        ).toEqual('-41749852160');
+        ).toStrictEqual('-41749852160');
       });
     });
 
     describe('applyConversionRate', () => {
-      it('Should multiply the value by the conversionRate supplied', () => {
+      it('should multiply the value by the conversionRate supplied', () => {
         expect(
           new Numeric(10, 10).applyConversionRate(468.5).toString(),
-        ).toEqual('4685');
+        ).toStrictEqual('4685');
       });
 
-      it('Should multiply the value by the conversionRate supplied when conversionRate is a BigNumber', () => {
+      it('should multiply the value by the conversionRate supplied when conversionRate is a BigNumber', () => {
         expect(
           new Numeric(10, 10)
             .applyConversionRate(new BigNumber(468.5, 10))
             .toString(),
-        ).toEqual('4685');
+        ).toStrictEqual('4685');
       });
 
-      it('Should multiply the value by the inverse of conversionRate supplied when second parameter is true', () => {
+      it('should multiply the value by the inverse of conversionRate supplied when second parameter is true', () => {
         expect(
           new Numeric(10, 10).applyConversionRate(468.5, true).toString(),
-        ).toEqual('0.0213447171824973319');
+        ).toStrictEqual('0.0213447171824973319');
       });
 
-      it('Should multiply the value by the inverse of the BigNumber conversionRate supplied when second parameter is true', () => {
+      it('should multiply the value by the inverse of the BigNumber conversionRate supplied when second parameter is true', () => {
         expect(
           new Numeric(10, 10)
             .applyConversionRate(new BigNumber(468.5, 10), true)
             .toString(),
-        ).toEqual('0.0213447171824973319');
+        ).toStrictEqual('0.0213447171824973319');
       });
     });
   });
 
   describe('Base conversion', () => {
     it('should convert a hexadecimal string to a decimal string', () => {
-      expect(new Numeric('0x5208', 16).toBase(10).toString()).toEqual('21000');
+      expect(new Numeric('0x5208', 16).toBase(10).toString()).toStrictEqual(
+        '21000',
+      );
     });
 
     it('should convert a decimal string to a hexadecimal string', () => {
-      expect(new Numeric('21000', 10).toBase(16).toString()).toEqual('5208');
+      expect(new Numeric('21000', 10).toBase(16).toString()).toStrictEqual(
+        '5208',
+      );
     });
 
     it('should convert a decimal string to a 0x prefixed hexadecimal string', () => {
-      expect(new Numeric('21000', 10).toPrefixedHexString()).toEqual('0x5208');
+      expect(new Numeric('21000', 10).toPrefixedHexString()).toStrictEqual(
+        '0x5208',
+      );
     });
 
     it('should convert a decimal number to a hexadecimal string', () => {
-      expect(new Numeric(21000, 10).toBase(16).toString()).toEqual('5208');
+      expect(new Numeric(21000, 10).toBase(16).toString()).toStrictEqual(
+        '5208',
+      );
     });
 
     it('should convert a decimal number to a 0x prefixed hexadecimal string', () => {
-      expect(new Numeric(21000, 10).toPrefixedHexString()).toEqual('0x5208');
+      expect(new Numeric(21000, 10).toPrefixedHexString()).toStrictEqual(
+        '0x5208',
+      );
     });
   });
 
   describe('Comparisons', () => {
-    it('Should correctly identify that 0xa is greater than 0x9', () => {
-      expect(new Numeric('0xa', 16).greaterThan('0x9', 16)).toEqual(true);
+    it('should correctly identify that 0xa is greater than 0x9', () => {
+      expect(new Numeric('0xa', 16).greaterThan('0x9', 16)).toStrictEqual(true);
     });
-    it('Should correctly identify that 0x9 is less than 0xa', () => {
-      expect(new Numeric('0x9', 16).lessThan('0xa', 16)).toEqual(true);
+    it('should correctly identify that 0x9 is less than 0xa', () => {
+      expect(new Numeric('0x9', 16).lessThan('0xa', 16)).toStrictEqual(true);
     });
-    it('Should correctly identify that 0xa is greater than or equal to 0xa', () => {
-      expect(new Numeric('0xa', 16).greaterThanOrEqualTo('0xa', 16)).toEqual(
+    it('should correctly identify that 0xa is greater than or equal to 0xa', () => {
+      expect(
+        new Numeric('0xa', 16).greaterThanOrEqualTo('0xa', 16),
+      ).toStrictEqual(true);
+    });
+    it('should correctly identify that 0xa is less than or equal to 0xa', () => {
+      expect(new Numeric('0xa', 16).lessThanOrEqualTo('0xa', 16)).toStrictEqual(
         true,
       );
     });
-    it('Should correctly identify that 0xa is less than or equal to 0xa', () => {
-      expect(new Numeric('0xa', 16).lessThanOrEqualTo('0xa', 16)).toEqual(true);
-    });
 
-    it('Should correctly identify that 0xa is greater than 9', () => {
-      expect(new Numeric('0xa', 16).greaterThan(9, 10)).toEqual(true);
+    it('should correctly identify that 0xa is greater than 9', () => {
+      expect(new Numeric('0xa', 16).greaterThan(9, 10)).toStrictEqual(true);
     });
-    it('Should correctly identify that 0x9 is less than 10', () => {
-      expect(new Numeric('0x9', 16).lessThan(10, 10)).toEqual(true);
+    it('should correctly identify that 0x9 is less than 10', () => {
+      expect(new Numeric('0x9', 16).lessThan(10, 10)).toStrictEqual(true);
     });
-    it('Should correctly identify that 10 is greater than or equal to 0xa', () => {
-      expect(new Numeric(10, 10).greaterThanOrEqualTo('0xa', 16)).toEqual(true);
+    it('should correctly identify that 10 is greater than or equal to 0xa', () => {
+      expect(new Numeric(10, 10).greaterThanOrEqualTo('0xa', 16)).toStrictEqual(
+        true,
+      );
     });
-    it('Should correctly identify that 10 is less than or equal to 0xa', () => {
-      expect(new Numeric(10, 10).lessThanOrEqualTo('0xa', 16)).toEqual(true);
+    it('should correctly identify that 10 is less than or equal to 0xa', () => {
+      expect(new Numeric(10, 10).lessThanOrEqualTo('0xa', 16)).toStrictEqual(
+        true,
+      );
     });
   });
 
   describe('Positive and Negative determination', () => {
-    it('Should correctly identify a negative number with isNegative', () => {
-      expect(new Numeric(-10, 10).isNegative()).toEqual(true);
-      expect(new Numeric('-10', 10).isNegative()).toEqual(true);
-      expect(new Numeric('-0xa', 16).isNegative()).toEqual(true);
+    it('should correctly identify a negative number with isNegative', () => {
+      expect(new Numeric(-10, 10).isNegative()).toStrictEqual(true);
+      expect(new Numeric('-10', 10).isNegative()).toStrictEqual(true);
+      expect(new Numeric('-0xa', 16).isNegative()).toStrictEqual(true);
     });
-    it('Should return false for isNegative when number is positive', () => {
-      expect(new Numeric(10, 10).isNegative()).toEqual(false);
-      expect(new Numeric('10', 10).isNegative()).toEqual(false);
-      expect(new Numeric('0xa', 16).isNegative()).toEqual(false);
+    it('should return false for isNegative when number is positive', () => {
+      expect(new Numeric(10, 10).isNegative()).toStrictEqual(false);
+      expect(new Numeric('10', 10).isNegative()).toStrictEqual(false);
+      expect(new Numeric('0xa', 16).isNegative()).toStrictEqual(false);
     });
-    it('Should correctly identify a positive number with isPositive', () => {
-      expect(new Numeric(10, 10).isPositive()).toEqual(true);
-      expect(new Numeric('10', 10).isPositive()).toEqual(true);
-      expect(new Numeric('0xa', 16).isPositive()).toEqual(true);
+    it('should correctly identify a positive number with isPositive', () => {
+      expect(new Numeric(10, 10).isPositive()).toStrictEqual(true);
+      expect(new Numeric('10', 10).isPositive()).toStrictEqual(true);
+      expect(new Numeric('0xa', 16).isPositive()).toStrictEqual(true);
     });
-    it('Should return false for isPositive when number is negative', () => {
-      expect(new Numeric(-10, 10).isPositive()).toEqual(false);
-      expect(new Numeric('-10', 10).isPositive()).toEqual(false);
-      expect(new Numeric('-0xa', 16).isPositive()).toEqual(false);
+    it('should return false for isPositive when number is negative', () => {
+      expect(new Numeric(-10, 10).isPositive()).toStrictEqual(false);
+      expect(new Numeric('-10', 10).isPositive()).toStrictEqual(false);
+      expect(new Numeric('-0xa', 16).isPositive()).toStrictEqual(false);
     });
   });
 
   describe('Terminating functions, return values', () => {
     describe('toString', () => {
-      it('Should return a string representation of provided hex', () => {
-        expect(new Numeric('0xa', 16).toString()).toEqual('a');
+      it('should return a string representation of provided hex', () => {
+        expect(new Numeric('0xa', 16).toString()).toStrictEqual('a');
       });
 
-      it('Should return a string representation of provided decimal string', () => {
-        expect(new Numeric('10', 10).toString()).toEqual('10');
+      it('should return a string representation of provided decimal string', () => {
+        expect(new Numeric('10', 10).toString()).toStrictEqual('10');
       });
 
-      it('Should return a string representation of provided number', () => {
-        expect(new Numeric(10, 10).toString()).toEqual('10');
+      it('should return a string representation of provided number', () => {
+        expect(new Numeric(10, 10).toString()).toStrictEqual('10');
       });
 
-      it('Should return a string representation of provided float', () => {
-        expect(new Numeric(10.5, 10).toString()).toEqual('10.5');
+      it('should return a string representation of provided float', () => {
+        expect(new Numeric(10.5, 10).toString()).toStrictEqual('10.5');
       });
 
-      it('Should return a string representation of provided BigNumber', () => {
-        expect(new Numeric(new BigNumber(10, 10)).toString()).toEqual('10');
+      it('should return a string representation of provided BigNumber', () => {
+        expect(new Numeric(new BigNumber(10, 10)).toString()).toStrictEqual(
+          '10',
+        );
       });
 
-      it('Should return a string representation of provided BN', () => {
-        expect(new Numeric(new BN(10, 10)).toString()).toEqual('10');
+      it('should return a string representation of provided BN', () => {
+        expect(new Numeric(new BN(10, 10)).toString()).toStrictEqual('10');
       });
     });
 
     describe('toNumber', () => {
-      it('Should return a number representing provided hex', () => {
-        expect(new Numeric('0xa', 16).toNumber()).toEqual(10);
+      it('should return a number representing provided hex', () => {
+        expect(new Numeric('0xa', 16).toNumber()).toStrictEqual(10);
       });
 
-      it('Should return a number representation of provided decimal string', () => {
-        expect(new Numeric('10', 10).toNumber()).toEqual(10);
+      it('should return a number representation of provided decimal string', () => {
+        expect(new Numeric('10', 10).toNumber()).toStrictEqual(10);
       });
 
-      it('Should return a number representation of provided number', () => {
-        expect(new Numeric(10, 10).toNumber()).toEqual(10);
+      it('should return a number representation of provided number', () => {
+        expect(new Numeric(10, 10).toNumber()).toStrictEqual(10);
       });
 
-      it('Should return a number representation of provided float', () => {
-        expect(new Numeric(10.5, 10).toNumber()).toEqual(10.5);
+      it('should return a number representation of provided float', () => {
+        expect(new Numeric(10.5, 10).toNumber()).toStrictEqual(10.5);
       });
 
-      it('Should return a number representation of provided BigNumber', () => {
-        expect(new Numeric(new BigNumber(10, 10)).toNumber()).toEqual(10);
+      it('should return a number representation of provided BigNumber', () => {
+        expect(new Numeric(new BigNumber(10, 10)).toNumber()).toStrictEqual(10);
       });
 
-      it('Should return a number representation of provided BN', () => {
-        expect(new Numeric(new BN(10, 10)).toNumber()).toEqual(10);
+      it('should return a number representation of provided BN', () => {
+        expect(new Numeric(new BN(10, 10)).toNumber()).toStrictEqual(10);
       });
     });
 
     describe('toFixed', () => {
-      it('Should return a string representing provided hex to 2 decimal places', () => {
-        expect(new Numeric('0xa.7', 16).toFixed(2)).toEqual('10.44');
+      it('should return a string representing provided hex to 2 decimal places', () => {
+        expect(new Numeric('0xa.7', 16).toFixed(2)).toStrictEqual('10.44');
       });
 
-      it('Should return a string representation of provided decimal string to 2 decimal places', () => {
-        expect(new Numeric('10.4375', 10).toFixed(2)).toEqual('10.44');
+      it('should return a string representation of provided decimal string to 2 decimal places', () => {
+        expect(new Numeric('10.4375', 10).toFixed(2)).toStrictEqual('10.44');
       });
 
-      it('Should return a string representation of provided float to 2 decimal places', () => {
-        expect(new Numeric(10.4375, 10).toFixed(2)).toEqual('10.44');
+      it('should return a string representation of provided float to 2 decimal places', () => {
+        expect(new Numeric(10.4375, 10).toFixed(2)).toStrictEqual('10.44');
       });
 
-      it('Should return a number representation of provided BigNumber to 2 decimal places', () => {
-        expect(new Numeric(new BigNumber(10.4375, 10)).toFixed(2)).toEqual(
-          '10.44',
-        );
+      it('should return a number representation of provided BigNumber to 2 decimal places', () => {
+        expect(
+          new Numeric(new BigNumber(10.4375, 10)).toFixed(2),
+        ).toStrictEqual('10.44');
       });
     });
 
     describe('round', () => {
       it('should return number rounded', () => {
-        expect(new Numeric(10.4375, 10).round()).toEqual(
+        expect(new Numeric(10.4375, 10).round()).toStrictEqual(
           new Numeric(10.4375, 10),
         );
-        expect(new Numeric(10.4375, 10).round(0)).toEqual(new Numeric(10, 10));
-        expect(new Numeric(10.4375, 10).round(1)).toEqual(
+        expect(new Numeric(10.4375, 10).round(0)).toStrictEqual(
+          new Numeric(10, 10),
+        );
+        expect(new Numeric(10.4375, 10).round(1)).toStrictEqual(
           new Numeric(10.4, 10),
         );
-        expect(new Numeric(10.4375, 10).round(2)).toEqual(
+        expect(new Numeric(10.4375, 10).round(2)).toStrictEqual(
           new Numeric(10.44, 10),
         );
-        expect(new Numeric(10.4375, 10).round(3)).toEqual(
+        expect(new Numeric(10.4375, 10).round(3)).toStrictEqual(
           new Numeric(10.437, 10),
         );
-        expect(new Numeric(10.4375, 10).round(4)).toEqual(
+        expect(new Numeric(10.4375, 10).round(4)).toStrictEqual(
           new Numeric(10.4375, 10),
         );
-        expect(new Numeric(10.4375, 10).round(5)).toEqual(
+        expect(new Numeric(10.4375, 10).round(5)).toStrictEqual(
           new Numeric(10.4375, 10),
         );
       });
diff --git a/shared/modules/error.test.ts b/shared/modules/error.test.ts
index 5f1d3eee6..247ef302d 100644
--- a/shared/modules/error.test.ts
+++ b/shared/modules/error.test.ts
@@ -3,11 +3,11 @@ import { isErrorWithMessage, logErrorWithMessage } from './error';
 
 jest.mock('loglevel');
 
-afterEach(() => {
-  jest.resetAllMocks();
-});
-
 describe('error module', () => {
+  afterEach(() => {
+    jest.resetAllMocks();
+  });
+
   describe('isErrorWithMessage', () => {
     it('returns true when passed an instance of an Error', () => {
       expect(isErrorWithMessage(new Error('test'))).toBe(true);
@@ -21,12 +21,12 @@ describe('error module', () => {
   describe('logErrorWithMessage', () => {
     it('calls loglevel.error with the error.message when passed an instance of Error', () => {
       logErrorWithMessage(new Error('test'));
-      expect(log.error).toBeCalledWith('test');
+      expect(log.error).toHaveBeenCalledWith('test');
     });
 
     it('calls loglevel.error with the parameter passed in when parameter is not an instance of Error', () => {
       logErrorWithMessage({ test: 'test' });
-      expect(log.error).toBeCalledWith({ test: 'test' });
+      expect(log.error).toHaveBeenCalledWith({ test: 'test' });
     });
   });
 });