gistfile.patch

diff --git a/lib/format.js b/lib/format.js
index 79cad68..9c7b9eb 100644
--- a/lib/format.js
+++ b/lib/format.js
@@ -125,8 +125,12 @@ class Format {
       case 'symbol':
         return this.object.toString()
 
+      case 'bigint':
+        return this.object.toString() + 'n'
+
       case 'string':
         return this.string()
+
       case 'boolean':
       case 'number':
         return JSON.stringify(this.object)
diff --git a/lib/match.js b/lib/match.js
index 8695e7e..3ee9e27 100644
--- a/lib/match.js
+++ b/lib/match.js
@@ -27,6 +27,7 @@ class Match extends Has {
       : pattern === String ? typeof obj === 'string'
       : pattern === Symbol ? typeof obj === 'symbol'
       : pattern === Boolean ? typeof obj === 'boolean'
+      : pattern === BigInt ? typeof obj === 'bigint'
       : pattern === Map ? this.isMap()
       : pattern === Set ? this.isSet()
       : pattern === Object ? obj && typeof obj === 'object'
diff --git a/tap-snapshots/test-format.js-TAP.test.js b/tap-snapshots/test-format.js-TAP.test.js
index 6ddbb5c..362346c 100644
--- a/tap-snapshots/test-format.js-TAP.test.js
+++ b/tap-snapshots/test-format.js-TAP.test.js
@@ -279,7 +279,7 @@ exports[`test/format.js TAP gnarly object, many points of view > js 1`] = `
   "fancyErr": Object.assign(new Error("fancy pantsy"), {
     "fancy": "pantsy",
   }),
-  "assert": Object.assign(new AssertionError("{\\n  a: 1,\\n  k: {\\n    i: {\\n      i: 1,\\n      k: [Circular]\\n    },\\n    k: [Circular]\\n  }\\n} == {\\n  o: true\\n}"), {
+  "assert": Object.assign(new AssertionError("<ref *1> {\\n  a: 1,\\n  k: <ref *2> {\\n    i: {\\n      i: 1,\\n      k: [Circular *2]\\n    },\\n    k: [Circular *1]\\n  }\\n} == {\\n  o: true\\n}"), {
     "generatedMessage": true,
     "code": "ERR_ASSERTION",
     "actual": &ref_2 {
@@ -617,7 +617,7 @@ Object {
 `
 
 exports[`test/format.js TAP gnarly object, many points of view > tight 1`] = `
-&1 {"a":1,"b":2,"extra":true,"c":3,"d":4,"more":false,"e":{"f":{"g":1,},"a":[2,3,4,],"h":"asdf","multilineString":"this is a line\\n"+"this is a line\\n"+"this is a line\\n"+"this is a line\\n"+"\\n","emptyString":"",},"nullObject":{"x":{},"y":{},"z":{"zed":true,},},"p":new Set([{"x":"y","z":true,},{"a":1,},{"b":2,},]),"s":new Set([{"b":2,},{"c":3,},*1,]),"m":new Map([[&2 {"a":1,"k":&3 {"k":*2,"i":{"i":1,"k":*3,},},"f":*1,"c":&4 {"c":{"c":*4,"b":{"b":1,"d":*4,},},"a":&5 [1,*4,*5,],"k":*2,"f":*1,},},1],[{"b":2,},2],[{"c":"d",},{"re":/ef/g,}],[1,&4 {"c":{"c":*4,"b":{"b":1,"d":*4,},},"a":&5 [1,*4,*5,],"k":&2 {"a":1,"k":&3 {"k":*2,"i":{"i":1,"k":*3,},},"f":*1,"c":*4,},"f":*1,}],[*1,&2 {"a":1,"k":&3 {"k":*2,"i":{"i":1,"k":*3,},},"f":*1,"c":&4 {"c":{"c":*4,"b":{"b":1,"d":*4,},},"a":&5 [1,*4,*5,],"k":*2,"f":*1,},}],]),"ao":[{"o":true,},{"o":true,},[{"o":true,},{"o":true,},],],"om":new Map([[{"o":true,},&2 {"a":1,"k":&3 {"k":*2,"i":{"i":1,"k":*3,},},"f":*1,"c":&4 {"c":{"c":*4,"b":{"b":1,"d":*4,},},"a":&5 [1,*4,*5,],"k":*2,"f":*1,},}],[&2 {"a":1,"k":&3 {"k":*2,"i":{"i":1,"k":*3,},},"f":*1,"c":&4 {"c":{"c":*4,"b":{"b":1,"d":*4,},},"a":&5 [1,*4,*5,],"k":*2,"f":*1,},},{"o":true,}],]),"args":[1,2,3,{"o":true,},],"buf":Buffer.from("686f776479", "hex"),"emp":{"b":Buffer.alloc(0),"a":[],"o":{},"m":new Map(),"s":new Set(),},"fns":{"name":function foo () {},"anon":function () {},"arr":() => {},"identity":x => x,"nameless":() => {},},"sym":Symbol(prince),"date":2019-02-14T07:13:44.100Z,"n":null,"undef":undefined,"classy":{},"err":new Error("just an error"),"emptyErr":new Error(""),"fancyErr":Object.assign(new Error("fancy pantsy"), {"fancy":"pantsy",}),"assert":Object.assign(new AssertionError("{\\n  a: 1,\\n  k: {\\n    i: {\\n      i: 1,\\n      k: [Circular]\\n    },\\n    k: [Circular]\\n  }\\n} == {\\n  o: true\\n}"), {"generatedMessage":true,"code":"ERR_ASSERTION","actual":&2 {"a":1,"k":&3 {"k":*2,"i":{"i":1,"k":*3,},},"f":*1,"c":&4 {"c":{"c":*4,"b":{"b":1,"d":*4,},},"a":&5 [1,*4,*5,],"k":*2,"f":*1,},},"expected":{"o":true,},"operator":"==",}),}
+&1 {"a":1,"b":2,"extra":true,"c":3,"d":4,"more":false,"e":{"f":{"g":1,},"a":[2,3,4,],"h":"asdf","multilineString":"this is a line\\n"+"this is a line\\n"+"this is a line\\n"+"this is a line\\n"+"\\n","emptyString":"",},"nullObject":{"x":{},"y":{},"z":{"zed":true,},},"p":new Set([{"x":"y","z":true,},{"a":1,},{"b":2,},]),"s":new Set([{"b":2,},{"c":3,},*1,]),"m":new Map([[&2 {"a":1,"k":&3 {"k":*2,"i":{"i":1,"k":*3,},},"f":*1,"c":&4 {"c":{"c":*4,"b":{"b":1,"d":*4,},},"a":&5 [1,*4,*5,],"k":*2,"f":*1,},},1],[{"b":2,},2],[{"c":"d",},{"re":/ef/g,}],[1,&4 {"c":{"c":*4,"b":{"b":1,"d":*4,},},"a":&5 [1,*4,*5,],"k":&2 {"a":1,"k":&3 {"k":*2,"i":{"i":1,"k":*3,},},"f":*1,"c":*4,},"f":*1,}],[*1,&2 {"a":1,"k":&3 {"k":*2,"i":{"i":1,"k":*3,},},"f":*1,"c":&4 {"c":{"c":*4,"b":{"b":1,"d":*4,},},"a":&5 [1,*4,*5,],"k":*2,"f":*1,},}],]),"ao":[{"o":true,},{"o":true,},[{"o":true,},{"o":true,},],],"om":new Map([[{"o":true,},&2 {"a":1,"k":&3 {"k":*2,"i":{"i":1,"k":*3,},},"f":*1,"c":&4 {"c":{"c":*4,"b":{"b":1,"d":*4,},},"a":&5 [1,*4,*5,],"k":*2,"f":*1,},}],[&2 {"a":1,"k":&3 {"k":*2,"i":{"i":1,"k":*3,},},"f":*1,"c":&4 {"c":{"c":*4,"b":{"b":1,"d":*4,},},"a":&5 [1,*4,*5,],"k":*2,"f":*1,},},{"o":true,}],]),"args":[1,2,3,{"o":true,},],"buf":Buffer.from("686f776479", "hex"),"emp":{"b":Buffer.alloc(0),"a":[],"o":{},"m":new Map(),"s":new Set(),},"fns":{"name":function foo () {},"anon":function () {},"arr":() => {},"identity":x => x,"nameless":() => {},},"sym":Symbol(prince),"date":2019-02-14T07:13:44.100Z,"n":null,"undef":undefined,"classy":{},"err":new Error("just an error"),"emptyErr":new Error(""),"fancyErr":Object.assign(new Error("fancy pantsy"), {"fancy":"pantsy",}),"assert":Object.assign(new AssertionError("<ref *1> {\\n  a: 1,\\n  k: <ref *2> {\\n    i: {\\n      i: 1,\\n      k: [Circular *2]\\n    },\\n    k: [Circular *1]\\n  }\\n} == {\\n  o: true\\n}"), {"generatedMessage":true,"code":"ERR_ASSERTION","actual":&2 {"a":1,"k":&3 {"k":*2,"i":{"i":1,"k":*3,},},"f":*1,"c":&4 {"c":{"c":*4,"b":{"b":1,"d":*4,},},"a":&5 [1,*4,*5,],"k":*2,"f":*1,},},"expected":{"o":true,},"operator":"==",}),}
 `
 
 exports[`test/format.js TAP gnarly object, many points of view different points of view > c 1`] = `
diff --git a/tap-snapshots/test-match.js-TAP.test.js b/tap-snapshots/test-match.js-TAP.test.js
index ba8798e..130de07 100644
--- a/tap-snapshots/test-match.js-TAP.test.js
+++ b/tap-snapshots/test-match.js-TAP.test.js
@@ -512,6 +512,48 @@ exports[`test/match.js TAP should handle arguments > must match snapshot 3`] = `
 
 `
 
+exports[`test/match.js TAP should handle bigints > must match snapshot 1`] = `
+--- expected
++++ actual
+@@ -1,1 +1,1 @@
+-null
++1n
+
+`
+
+exports[`test/match.js TAP should handle bigints > must match snapshot 2`] = `
+--- expected
++++ actual
+@@ -1,1 +1,1 @@
+-undefined
++1n
+
+`
+
+exports[`test/match.js TAP should handle bigints > must match snapshot 3`] = `
+--- expected
++++ actual
+
+`
+
+exports[`test/match.js TAP should handle bigints > must match snapshot 4`] = `
+--- expected
++++ actual
+
+`
+
+exports[`test/match.js TAP should handle bigints > must match snapshot 5`] = `
+--- expected
++++ actual
+
+`
+
+exports[`test/match.js TAP should handle bigints > must match snapshot 6`] = `
+--- expected
++++ actual
+
+`
+
 exports[`test/match.js TAP should handle dates > must match snapshot 1`] = `
 --- expected
 +++ actual
diff --git a/tap-snapshots/test-same.js-TAP.test.js b/tap-snapshots/test-same.js-TAP.test.js
index c5d0c38..c9bce35 100644
--- a/tap-snapshots/test-same.js-TAP.test.js
+++ b/tap-snapshots/test-same.js-TAP.test.js
@@ -920,6 +920,27 @@ exports[`test/same.js TAP should handle arguments > must match snapshot 3`] = `
 
 `
 
+exports[`test/same.js TAP should handle bigint > must match snapshot 1`] = `
+--- expected
++++ actual
+
+`
+
+exports[`test/same.js TAP should handle bigint > must match snapshot 2`] = `
+--- expected
++++ actual
+
+`
+
+exports[`test/same.js TAP should handle bigint > must match snapshot 3`] = `
+--- expected
++++ actual
+@@ -1,1 +1,1 @@
+-2n
++1n
+
+`
+
 exports[`test/same.js TAP should handle dates > must match snapshot 1`] = `
 --- expected
 +++ actual
diff --git a/test/format.js b/test/format.js
index f52acb6..8369523 100644
--- a/test/format.js
+++ b/test/format.js
@@ -220,3 +220,8 @@ t.test('hidden props and getters', t => {
   }).print(), 'all enumerable properties shown')
   t.end()
 })
+
+t.test('format BigInt', { skip: !global.BigInt ? 'no BigInt here' : false }, t => {
+  t.equal(new Format(BigInt('5')).print(), '5n')
+  t.end()
+})
diff --git a/test/match.js b/test/match.js
index ec2c8e7..02c8477 100644
--- a/test/match.js
+++ b/test/match.js
@@ -51,6 +51,16 @@ t.test('should handle dates', t => {
   t.end()
 })
 
+t.test('should handle bigints', t => {
+  t.notOk(match(t, BigInt('1'), null))
+  t.notOk(match(t, BigInt('1'), undefined))
+  t.ok(match(t, BigInt('1'), BigInt('1')))
+  t.ok(match(t, BigInt('1'), BigInt))
+  t.ok(match(t,{ x: BigInt('1') }, { x: BigInt('1') }))
+  t.ok(match(t,{ x: BigInt('1') }, { x: BigInt }))
+  t.end()
+})
+
 t.test('should handle RegExps', t => {
   t.notOk(match(t,/[b]/, /[a]/))
   t.notOk(match(t,/[a]/i, /[a]/g))
diff --git a/test/same.js b/test/same.js
index 1be94fa..3102856 100644
--- a/test/same.js
+++ b/test/same.js
@@ -189,6 +189,13 @@ t.test('should handle arguments', function (t) {
   t.end()
 })
 
+t.test('should handle bigint', function (t) {
+  t.ok(same(t, BigInt('0'), BigInt('0')))
+  t.ok(same(t, BigInt('1'), BigInt('1')))
+  t.notOk(same(t, BigInt('1'), BigInt('2')))
+  t.end()
+})
+
 t.test('same arrays match', function (t) {
   t.ok(same(t,[1, 2, 3], [1, 2, 3]))
   t.end()