diff --git a/jsesc.js b/jsesc.js
index 3456ede..ddf3159 100644
--- a/jsesc.js
+++ b/jsesc.js
@@ -210,6 +210,14 @@ const jsesc = (argument, options) => {
 				return JSON.stringify(Number(argument));
 			}
 
+      let negative = false;
+      if (argument < 0) {
+        negative = true;
+        // Use the BigInt constructor instead of `-1n` so that we still support
+        // older node versions.
+        argument *= isBigInt(argument) ? BigInt('-1') : -1;
+      }
+
       let result;
 			if (useDecNumbers) {
 				result = String(argument);
@@ -226,18 +234,15 @@ const jsesc = (argument, options) => {
 			}
 
       if (isBigInt(argument)) {
-        return result + 'n';
+        result += 'n';
       }
+
+      if (negative) {
+        result = '-' + result;
+      }
+
       return result;
-		} else if (isBigInt(argument)) {
-			if (json) {
-				// `BigInt` values less than `-Number.MAX_VALUE` or greater than
-        // `Number.MAX_VALUE` will become `-Infinity` or `Infinity`,
-        // respectively, and cannot be represented in JSON.
-				return JSON.stringify(Number(argument));
-			}
-      return argument + 'n';
-    } else if (!isObject(argument)) {
+		} else if (!isObject(argument)) {
 			if (json) {
 				// For some values (e.g. `undefined`, `function` objects),
 				// `JSON.stringify(value)` returns `undefined` (which isn’t valid
@@ -332,6 +337,6 @@ const jsesc = (argument, options) => {
 	return result;
 };
 
-jsesc.version = '3.0.2';
+jsesc.version = '3.1.0';
 
 module.exports = jsesc;
diff --git a/src/jsesc.js b/src/jsesc.js
index 290d568..36a3cd9 100644
--- a/src/jsesc.js
+++ b/src/jsesc.js
@@ -210,6 +210,14 @@ const jsesc = (argument, options) => {
 				return JSON.stringify(Number(argument));
 			}
 
+      let negative = false;
+      if (argument < 0) {
+        negative = true;
+        // Use the BigInt constructor instead of `-1n` so that we still support
+        // older node versions.
+        argument *= isBigInt(argument) ? BigInt('-1') : -1;
+      }
+
       let result;
 			if (useDecNumbers) {
 				result = String(argument);
@@ -226,18 +234,15 @@ const jsesc = (argument, options) => {
 			}
 
       if (isBigInt(argument)) {
-        return result + 'n';
+        result += 'n';
       }
+
+      if (negative) {
+        result = '-' + result;
+      }
+
       return result;
-		} else if (isBigInt(argument)) {
-			if (json) {
-				// `BigInt` values less than `-Number.MAX_VALUE` or greater than
-        // `Number.MAX_VALUE` will become `-Infinity` or `Infinity`,
-        // respectively, and cannot be represented in JSON.
-				return JSON.stringify(Number(argument));
-			}
-      return argument + 'n';
-    } else if (!isObject(argument)) {
+		} else if (!isObject(argument)) {
 			if (json) {
 				// For some values (e.g. `undefined`, `function` objects),
 				// `JSON.stringify(value)` returns `undefined` (which isn’t valid
diff --git a/tests/tests.js b/tests/tests.js
index 7c04562..af161f7 100644
--- a/tests/tests.js
+++ b/tests/tests.js
@@ -143,6 +143,7 @@ describe('common usage', function() {
 		assert.equal(
 			jsesc([
         0x42,
+        -0x42,
         0x1337,
         50n,
         100n,
@@ -153,12 +154,13 @@ describe('common usage', function() {
       ], {
 				'numbers': 'binary'
 			}),
-			'[0b1000010,0b1001100110111,0b110010n,0b1100100n,0b-1101111010000001111001000000101000000011010010111100111101001111111110000000011101111111011111101010011001011110010110001101000100001011101010001110011010101110001101101010100101000000010100101100100010111010100011101101101010111011011011000110010010000100001111100011110111010001100010100110000111110001000110111100101100001001110011001111011110010010100100101110001001111001000011010110000111011110001000111111001011101000101000111111100011110000111011101000010000001100001110000010110100110000101011001100000001010100100101111010111001011100111001111111000101000110101111001010010001010001111000101010111111101110000111001101101100000100001100000110000110010001110010101111100000010011110001000100001101010010010010010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000n,0b1101111010000001111001000000101000000011010010111100111101001111111110000000011101111111011111101010011001011110010110001101000100001011101010001110011010101110001101101010100101000000010100101100100010111010100011101101101010111011011011000110010010000100001111100011110111010001100010100110000111110001000110111100101100001001110011001111011110010010100100101110001001111001000011010110000111011110001000111111001011101000101000111111100011110000111011101000010000001100001110000010110100110000101011001100000001010100100101111010111001011100111001111111000101000110101111001010010001010001111000101010111111101110000111001101101100000100001100000110000110010001110010101111100000010011110001000100001101010010010010010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000n]',
+			'[0b1000010,-0b1000010,0b1001100110111,0b110010n,0b1100100n,-0b1101111010000001111001000000101000000011010010111100111101001111111110000000011101111111011111101010011001011110010110001101000100001011101010001110011010101110001101101010100101000000010100101100100010111010100011101101101010111011011011000110010010000100001111100011110111010001100010100110000111110001000110111100101100001001110011001111011110010010100100101110001001111001000011010110000111011110001000111111001011101000101000111111100011110000111011101000010000001100001110000010110100110000101011001100000001010100100101111010111001011100111001111111000101000110101111001010010001010001111000101010111111101110000111001101101100000100001100000110000110010001110010101111100000010011110001000100001101010010010010010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000n,0b1101111010000001111001000000101000000011010010111100111101001111111110000000011101111111011111101010011001011110010110001101000100001011101010001110011010101110001101101010100101000000010100101100100010111010100011101101101010111011011011000110010010000100001111100011110111010001100010100110000111110001000110111100101100001001110011001111011110010010100100101110001001111001000011010110000111011110001000111111001011101000101000111111100011110000111011101000010000001100001110000010110100110000101011001100000001010100100101111010111001011100111001111111000101000110101111001010010001010001111000101010111111101110000111001101101100000100001100000110000110010001110010101111100000010011110001000100001101010010010010010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000n]',
 			'`numbers: \'binary\'`'
 		);
 		assert.equal(
 			jsesc([
         0x42,
+        -0x42,
         0x1337,
         50n,
         100n,
@@ -172,12 +174,13 @@ describe('common usage', function() {
 				'numbers': 'binary',
 				'json': true
 			}),
-			'[66,4919,50,100,null,null,null,null]',
+			'[66,-66,4919,50,100,null,null,null,null]',
 			'`json: true` takes precedence over `numbers: \'binary\'`'
 		);
 		assert.equal(
 			jsesc([
         0x42,
+        -0x42,
         0x1337,
         50n,
         100n,
@@ -188,12 +191,13 @@ describe('common usage', function() {
       ], {
 				'numbers': 'octal'
 			}),
-			'[0o102,0o11467,0o62n,0o144n,0o-15720171005003227475177600357737523136261504135216325615524500245442724355527333062204174367214246076106745411631736224456117103260736107713505077436073502014160264605314012445727134717705065712212170527756071554041406062162574023610415222220000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000n,0o15720171005003227475177600357737523136261504135216325615524500245442724355527333062204174367214246076106745411631736224456117103260736107713505077436073502014160264605314012445727134717705065712212170527756071554041406062162574023610415222220000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000n]',
+			'[0o102,-0o102,0o11467,0o62n,0o144n,-0o15720171005003227475177600357737523136261504135216325615524500245442724355527333062204174367214246076106745411631736224456117103260736107713505077436073502014160264605314012445727134717705065712212170527756071554041406062162574023610415222220000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000n,0o15720171005003227475177600357737523136261504135216325615524500245442724355527333062204174367214246076106745411631736224456117103260736107713505077436073502014160264605314012445727134717705065712212170527756071554041406062162574023610415222220000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000n]',
 			'`numbers: \'octal\'`'
 		);
 		assert.equal(
 			jsesc([
         0x42,
+        -0x42,
         0x1337,
         50n,
         100n,
@@ -204,7 +208,7 @@ describe('common usage', function() {
       ], {
 				'numbers': 'hexadecimal'
 			}),
-			'[0x42,0x1337,0x32n,0x64n,0x-37A0790280D2F3D3FE01DFDFA997963442EA39AB8DAA5014B22EA3B6AEDB19210F8F7462987C46F2C2733DE4A4B89E43587788FCBA28FE3C3BA1030E0B4C2B301525EB9739FC51AF291478ABFB8736C10C186472BE04F110D492400000000000000000000000000000000000000000000000000000000000000000000000000000n,0x37A0790280D2F3D3FE01DFDFA997963442EA39AB8DAA5014B22EA3B6AEDB19210F8F7462987C46F2C2733DE4A4B89E43587788FCBA28FE3C3BA1030E0B4C2B301525EB9739FC51AF291478ABFB8736C10C186472BE04F110D492400000000000000000000000000000000000000000000000000000000000000000000000000000n]',
+			'[0x42,-0x42,0x1337,0x32n,0x64n,-0x37A0790280D2F3D3FE01DFDFA997963442EA39AB8DAA5014B22EA3B6AEDB19210F8F7462987C46F2C2733DE4A4B89E43587788FCBA28FE3C3BA1030E0B4C2B301525EB9739FC51AF291478ABFB8736C10C186472BE04F110D492400000000000000000000000000000000000000000000000000000000000000000000000000000n,0x37A0790280D2F3D3FE01DFDFA997963442EA39AB8DAA5014B22EA3B6AEDB19210F8F7462987C46F2C2733DE4A4B89E43587788FCBA28FE3C3BA1030E0B4C2B301525EB9739FC51AF291478ABFB8736C10C186472BE04F110D492400000000000000000000000000000000000000000000000000000000000000000000000000000n]',
 			'`numbers: \'hexadecimal\'`'
 		);
 		assert.equal(
@@ -528,11 +532,11 @@ describe('common usage', function() {
 			'`toJSON` methods are not called when `json: false`'
 		);
 		assert.equal(
-			jsesc([42, 42n], {
+			jsesc([42, 42n, -42, -42n], {
 				'numbers': 'hexadecimal',
 				'lowercaseHex': true
 			}),
-			'[0x2a,0x2an]',
+			'[0x2a,0x2an,-0x2a,-0x2an]',
 			'Hexadecimal integeral literals are lowercase when `lowercaseHex: true`'
 		);
 		assert.equal(