feat: BigInt Support

.eslintrc.js

@@ -26,7 +26,11 @@ module.exports = {
         ],
         'import/order': 'error',
         'no-dupe-class-members': 'off',
+        // ts handles this check for us, also eslint does not include Bigint
+        'no-undef': 'off',
         'no-unused-vars': 'off',
+        // ts handles this check for us, also eslint does not include bigint
+        'valid-typeof': 'off',
       },
     },
     // to make it more suitable for running on code examples in docs/ folder

CHANGELOG.md

@@ -11,6 +11,11 @@
 - `[expect]` Improve report when matcher fails, part 17 ([#8349](https://github.com/facebook/jest/pull/8349))
 - `[expect]` Improve report when matcher fails, part 18 ([#8356](https://github.com/facebook/jest/pull/8356))
 - `[expect]` Improve report when matcher fails, part 19 ([#8367](https://github.com/facebook/jest/pull/8367))
+- `[expect]`- Add BigInt Support to `toBeGreaterThan`, `toBeGreaterThanOrEqual`, `toBeLessThan` `toBeLessThanOrEqual` and `toBeCloseTo` ([#8382](https://github.com/facebook/jest/pull/8382))
+- `[jest-get-type]`- Add BigInt Support. ([#8382](https://github.com/facebook/jest/pull/8382))
+- `[jest-matcher-utils]`- Add BigInt Support to `ensureNumbers` `ensureActualIsNumber`, `ensureExpectedIsNumber` ([#8382](https://github.com/facebook/jest/pull/8382))
+- `[babel-plugin-jest-hoist]`- Add BigInt to `WHITELISTED_IDENTIFIERS`([#8382](https://github.com/facebook/jest/pull/8382))
+- `[babel-preset-jest]`- Add @babel/plugin-syntax-bigint`([#8382](https://github.com/facebook/jest/pull/8382))
 
 ### Fixes
 
@@ -31,6 +36,7 @@
 - `[@jest/reporters]` Migrate away from `istanbul-api` ([#8294](https://github.com/facebook/jest/pull/8294))
 - `[*]` Delete obsolete emails tag from header comment in test files ([#8377](https://github.com/facebook/jest/pull/8377))
 - `[expect]` optimize compare nodes ([#8368](https://github.com/facebook/jest/pull/8368))
+- `[eslintrc]` Disable valid-typeof, no-undef for ts overrides ([#8382](https://github.com/facebook/jest/pull/8382))
 
 ### Performance
 

packages/babel-plugin-jest-hoist/src/index.ts

@@ -25,6 +25,7 @@ const WHITELISTED_IDENTIFIERS: Set<string> = new Set([
   'Array',
   'ArrayBuffer',
   'Boolean',
+  'BigInt',
   'DataView',
   'Date',
   'Error',

packages/babel-preset-jest/index.js

@@ -9,5 +9,6 @@ module.exports = () => ({
   plugins: [
     require.resolve('babel-plugin-jest-hoist'),
     require.resolve('@babel/plugin-syntax-object-rest-spread'),
+    require.resolve('@babel/plugin-syntax-bigint'),
   ],
 });

packages/babel-preset-jest/package.json

@@ -9,6 +9,7 @@
   "license": "MIT",
   "main": "index.js",
   "dependencies": {
+    "@babel/plugin-syntax-bigint": "^7.0.0",
     "@babel/plugin-syntax-object-rest-spread": "^7.0.0",
     "babel-plugin-jest-hoist": "^24.6.0"
   },

packages/expect/src/__tests__/__snapshots__/matchers.test.js.snap

@@ -630,7 +630,7 @@ Received difference:   <red>0.005000099999999952</>"
 exports[`.toBeCloseTo() throws: Matcher error promise empty isNot false received 1`] = `
 "<dim>expect(</><red>received</><dim>).</>toBeCloseTo<dim>(</><green>expected</><dim>, </><green>precision</><dim>)</>
 
-<bold>Matcher error</>: <red>received</> value must be a number
+<bold>Matcher error</>: <red>received</> value must be a number or bigint
 
 Received has type:  string
 Received has value: <red>\\"\\"</>"
@@ -639,15 +639,15 @@ Received has value: <red>\\"\\"</>"
 exports[`.toBeCloseTo() throws: Matcher error promise empty isNot true expected 1`] = `
 "<dim>expect(</><red>received</><dim>).</>not<dim>.</>toBeCloseTo<dim>(</><green>expected</><dim>)</>
 
-<bold>Matcher error</>: <green>expected</> value must be a number
+<bold>Matcher error</>: <green>expected</> value must be a number or bigint
 
 Expected has value: <green>undefined</>"
 `;
 
 exports[`.toBeCloseTo() throws: Matcher error promise rejects isNot false expected 1`] = `
 "<dim>expect(</><red>received</><dim>).</>rejects<dim>.</>toBeCloseTo<dim>(</><green>expected</><dim>)</>
 
-<bold>Matcher error</>: <green>expected</> value must be a number
+<bold>Matcher error</>: <green>expected</> value must be a number or bigint
 
 Expected has type:  string
 Expected has value: <green>\\"0\\"</>"
@@ -656,7 +656,7 @@ Expected has value: <green>\\"0\\"</>"
 exports[`.toBeCloseTo() throws: Matcher error promise rejects isNot true received 1`] = `
 "<dim>expect(</><red>received</><dim>).</>rejects<dim>.</>not<dim>.</>toBeCloseTo<dim>(</><green>expected</><dim>)</>
 
-<bold>Matcher error</>: <red>received</> value must be a number
+<bold>Matcher error</>: <red>received</> value must be a number or bigint
 
 Received has type:  symbol
 Received has value: <red>Symbol(0.1)</>"
@@ -665,7 +665,7 @@ Received has value: <red>Symbol(0.1)</>"
 exports[`.toBeCloseTo() throws: Matcher error promise resolves isNot false received 1`] = `
 "<dim>expect(</><red>received</><dim>).</>resolves<dim>.</>toBeCloseTo<dim>(</><green>expected</><dim>, </><green>precision</><dim>)</>
 
-<bold>Matcher error</>: <red>received</> value must be a number
+<bold>Matcher error</>: <red>received</> value must be a number or bigint
 
 Received has type:  boolean
 Received has value: <red>false</>"
@@ -674,7 +674,7 @@ Received has value: <red>false</>"
 exports[`.toBeCloseTo() throws: Matcher error promise resolves isNot true expected 1`] = `
 "<dim>expect(</><red>received</><dim>).</>resolves<dim>.</>not<dim>.</>toBeCloseTo<dim>(</><green>expected</><dim>, </><green>precision</><dim>)</>
 
-<bold>Matcher error</>: <green>expected</> value must be a number
+<bold>Matcher error</>: <green>expected</> value must be a number or bigint
 
 Expected has value: <green>null</>"
 `;