Output ESM instead of CommonJS

.github/workflows/main.yml

@@ -18,7 +18,7 @@ jobs:
       - uses: actions/setup-node@v2
         with:
           node-version: ${{ matrix.node-version }}
-      - run: npm install
+      - run: npm install --force
       - run: npm test
       - uses: codecov/codecov-action@v1
         if: matrix.node-version == 14

package.json

@@ -12,6 +12,7 @@
 		"email": "sindresorhus@gmail.com",
 		"url": "https://sindresorhus.com"
 	},
+	"type": "module",
 	"main": "dist/index.js",
 	"engines": {
 		"node": ">=12"
@@ -61,15 +62,15 @@
 		"@types/lodash.isequal": "^4.5.5",
 		"@types/node": "^16.10.2",
 		"@types/vali-date": "^1.0.0",
-		"ava": "^2.4.0",
+		"ava": "^3.15.0",
 		"del-cli": "^4.0.0",
 		"expect-type": "^0.12.0",
 		"gh-pages": "^3.2.3",
 		"nyc": "^15.1.0",
-		"ts-node": "^10.2.1",
+		"ts-node": "^10.3.0",
 		"typedoc": "^0.22.5",
-		"typescript": "^4.4.3",
-		"xo": "^0.38.2"
+		"typescript": "^4.5.0-beta",
+		"xo": "^0.45.0"
 	},
 	"browser": {
 		"./dist/utils/infer-label.js": "./dist/utils/infer-label.browser.js"
@@ -94,22 +95,44 @@
 			"@typescript-eslint/no-empty-function": "off",
 			"@typescript-eslint/restrict-template-expressions": "off",
 			"@typescript-eslint/no-unused-vars": "off",
-			"import/no-anonymous-default-export": "off"
+			"import/no-anonymous-default-export": "off",
+			"@typescript-eslint/comma-dang": "off",
+			"operator-linebreak": "off",
+			"@typescript-eslint/object-curly-spacing": "off",
+			"@typescript-eslint/comma-dangle": "off",
+			"node/prefer-global/buffer": "off",
+			"unicorn/prefer-node-protocol": "off",
+			"no-warning-comments": "off",
+			"@typescript-eslint/no-unsafe-call": "off",
+			"import/order": "off",
+			"unicorn/numeric-separators-style": "off",
+			"key-spacing": "off",
+			"capitalized-comments": "off",
+			"arrow-body-style": "off",
+			"@typescript-eslint/no-unsafe-return": "off",
+			"no-multi-spaces": "off",
+			"node/prefer-global/process": "off",
+			"@typescript-eslint/naming-convention": "off",
+			"@typescript-eslint/indent": "off",
+			"@typescript-eslint/no-unsafe-assignment": "off",
+			"@typescript-eslint/ban-ts-comment": "off"
 		}
 	},
 	"ava": {
-		"babel": false,
-		"compileEnhancements": false,
+		"nonSemVerExperiments": {
+			"configurableModuleFormat": true
+		},
+		"nodeArguments": [
+			"--loader=ts-node/esm",
+			"--experimental-specifier-resolution=node"
+		],
 		"files": [
 			"test/**",
 			"!test/fixtures/**"
 		],
-		"extensions": [
-			"ts"
-		],
-		"require": [
-			"ts-node/register"
-		]
+		"extensions": {
+			"ts": "module"
+		}
 	},
 	"nyc": {
 		"reporter": [

source/argument-error.ts

@@ -1,4 +1,4 @@
-import {generateStackTrace} from './utils/generate-stack';
+import {generateStackTrace} from './utils/generate-stack.js';
 
 const wrapStackTrace = (error: ArgumentError, stack: string): string => `${error.name}: ${error.message}\n${stack}`;
 

source/index.ts

@@ -1,10 +1,10 @@
 import callsites from 'callsites';
-import {inferLabel} from './utils/infer-label';
-import {Predicate} from './predicates/predicate';
-import {BasePredicate, isPredicate} from './predicates/base-predicate';
-import modifiers, {Modifiers} from './modifiers';
-import predicates, {Predicates} from './predicates';
-import test from './test';
+import {inferLabel} from './utils/infer-label.js';
+import {Predicate} from './predicates/predicate.js';
+import {BasePredicate, isPredicate} from './predicates/base-predicate.js';
+import modifiers, {Modifiers} from './modifiers.js';
+import predicates, {Predicates} from './predicates.js';
+import test from './test.js';
 
 /**
 @hidden
@@ -149,5 +149,5 @@ const _ow: Ow = predicates(modifiers(ow)) as Ow;
 export default _ow;
 
 export {BasePredicate, Predicate};
-export * from './predicates';
-export {ArgumentError} from './argument-error';
+export * from './predicates.js';
+export {ArgumentError} from './argument-error.js';

source/modifiers.ts

@@ -1,5 +1,5 @@
-import {BasePredicate} from '.';
-import predicates, {Predicates} from './predicates';
+import {BasePredicate} from './index.js';
+import predicates, {Predicates} from './predicates.js';
 
 type Optionalify<P> = P extends BasePredicate<infer X>
 	? P & BasePredicate<X | undefined>

source/operators/not.ts

@@ -1,6 +1,6 @@
-import randomId from '../utils/random-id';
-import {validatorSymbol} from '../predicates/predicate';
-import type {Predicate, Validator} from '../predicates/predicate';
+import randomId from '../utils/random-id.js';
+import {validatorSymbol} from '../predicates/predicate.js';
+import type {Predicate, Validator} from '../predicates/predicate.js';
 
 /**
 Operator which inverts the following validation.

source/predicates.ts

@@ -1,22 +1,22 @@
 import {TypedArray} from 'type-fest';
-import {StringPredicate} from './predicates/string';
-import {NumberPredicate} from './predicates/number';
-import {BigIntPredicate} from './predicates/bigint';
-import {BooleanPredicate} from './predicates/boolean';
-import {Predicate, PredicateOptions} from './predicates/predicate';
-import {ArrayPredicate} from './predicates/array';
-import {ObjectPredicate, Shape} from './predicates/object';
-import {DatePredicate} from './predicates/date';
-import {ErrorPredicate} from './predicates/error';
-import {MapPredicate} from './predicates/map';
-import {WeakMapPredicate} from './predicates/weak-map';
-import {SetPredicate} from './predicates/set';
-import {WeakSetPredicate} from './predicates/weak-set';
-import {TypedArrayPredicate} from './predicates/typed-array';
-import {ArrayBufferPredicate} from './predicates/array-buffer';
-import {DataViewPredicate} from './predicates/data-view';
-import {BasePredicate} from './predicates/base-predicate';
-import {AnyPredicate} from './predicates/any';
+import {StringPredicate} from './predicates/string.js';
+import {NumberPredicate} from './predicates/number.js';
+import {BigIntPredicate} from './predicates/bigint.js';
+import {BooleanPredicate} from './predicates/boolean.js';
+import {Predicate, PredicateOptions} from './predicates/predicate.js';
+import {ArrayPredicate} from './predicates/array.js';
+import {ObjectPredicate, Shape} from './predicates/object.js';
+import {DatePredicate} from './predicates/date.js';
+import {ErrorPredicate} from './predicates/error.js';
+import {MapPredicate} from './predicates/map.js';
+import {WeakMapPredicate} from './predicates/weak-map.js';
+import {SetPredicate} from './predicates/set.js';
+import {WeakSetPredicate} from './predicates/weak-set.js';
+import {TypedArrayPredicate} from './predicates/typed-array.js';
+import {ArrayBufferPredicate} from './predicates/array-buffer.js';
+import {DataViewPredicate} from './predicates/data-view.js';
+import {BasePredicate} from './predicates/base-predicate.js';
+import {AnyPredicate} from './predicates/any.js';
 
 export interface Predicates {
 	/**

source/predicates/any.ts

@@ -1,8 +1,8 @@
-import {ArgumentError} from '../argument-error';
-import {BasePredicate, testSymbol} from './base-predicate';
-import {PredicateOptions} from './predicate';
-import {Main} from '..';
-import {generateArgumentErrorMessage} from '../utils/generate-argument-error-message';
+import {ArgumentError} from '../argument-error.js';
+import {BasePredicate, testSymbol} from './base-predicate.js';
+import {PredicateOptions} from './predicate.js';
+import {Main} from '../index.js';
+import {generateArgumentErrorMessage} from '../utils/generate-argument-error-message.js';
 
 /**
 @hidden

source/predicates/array-buffer.ts

@@ -1,4 +1,4 @@
-import {Predicate} from './predicate';
+import {Predicate} from './predicate.js';
 
 export class ArrayBufferPredicate<T extends ArrayBufferLike> extends Predicate<T> {
 	/**

source/predicates/array.ts

@@ -1,9 +1,9 @@
-import isEqual = require('lodash.isequal');
-import {BasePredicate} from './base-predicate';
-import {Predicate, PredicateOptions} from './predicate';
-import {Shape} from './object';
-import {exact} from '../utils/match-shape';
-import ofType from '../utils/of-type';
+import isEqual from 'lodash.isequal';
+import {BasePredicate} from './base-predicate.js';
+import {Predicate, PredicateOptions} from './predicate.js';
+import {Shape} from './object.js';
+import {exact} from '../utils/match-shape.js';
+import ofType from '../utils/of-type.js';
 
 export class ArrayPredicate<T = unknown> extends Predicate<T[]> {
 	/**

source/predicates/base-predicate.ts

@@ -1,4 +1,4 @@
-import {Main} from '..';
+import {Main} from '../index.js';
 
 /**
 @hidden

source/predicates/bigint.ts

@@ -1,4 +1,4 @@
-import {Predicate, PredicateOptions} from './predicate';
+import {Predicate, PredicateOptions} from './predicate.js';
 
 export class BigIntPredicate extends Predicate<bigint> {
 	/**

source/predicates/boolean.ts

@@ -1,4 +1,4 @@
-import {Predicate, PredicateOptions} from './predicate';
+import {Predicate, PredicateOptions} from './predicate.js';
 
 export class BooleanPredicate extends Predicate<boolean> {
 	/**

source/predicates/data-view.ts

@@ -1,4 +1,4 @@
-import {Predicate, PredicateOptions} from './predicate';
+import {Predicate, PredicateOptions} from './predicate.js';
 
 export class DataViewPredicate extends Predicate<DataView> {
 	/**

source/predicates/date.ts

@@ -1,4 +1,4 @@
-import {Predicate, PredicateOptions} from './predicate';
+import {Predicate, PredicateOptions} from './predicate.js';
 
 export class DatePredicate extends Predicate<Date> {
 	/**

source/predicates/error.ts

@@ -1,4 +1,4 @@
-import {Predicate, PredicateOptions} from './predicate';
+import {Predicate, PredicateOptions} from './predicate.js';
 
 export class ErrorPredicate extends Predicate<Error> {
 	/**

source/predicates/map.ts

@@ -1,7 +1,7 @@
-import isEqual = require('lodash.isequal');
-import hasItems from '../utils/has-items';
-import ofType from '../utils/of-type';
-import {Predicate, PredicateOptions} from './predicate';
+import isEqual from 'lodash.isequal';
+import hasItems from '../utils/has-items.js';
+import ofType from '../utils/of-type.js';
+import {Predicate, PredicateOptions} from './predicate.js';
 
 export class MapPredicate<T1 = unknown, T2 = unknown> extends Predicate<Map<T1, T2>> {
 	/**

source/predicates/number.ts

@@ -1,5 +1,5 @@
 import is from '@sindresorhus/is';
-import {Predicate, PredicateOptions} from './predicate';
+import {Predicate, PredicateOptions} from './predicate.js';
 
 export class NumberPredicate extends Predicate<number> {
 	/**

source/predicates/object.ts

@@ -1,13 +1,13 @@
 import is from '@sindresorhus/is';
 
-import dotProp = require('dot-prop');
-import isEqual = require('lodash.isequal');
-import hasItems from '../utils/has-items';
-import ofType from '../utils/of-type';
-import ofTypeDeep from '../utils/of-type-deep';
-import {partial, exact, Shape, TypeOfShape} from '../utils/match-shape';
-import {Predicate, PredicateOptions} from './predicate';
-import {BasePredicate} from './base-predicate';
+import dotProp from 'dot-prop';
+import isEqual from 'lodash.isequal';
+import hasItems from '../utils/has-items.js';
+import ofType from '../utils/of-type.js';
+import ofTypeDeep from '../utils/of-type-deep.js';
+import {partial, exact, Shape, TypeOfShape} from '../utils/match-shape.js';
+import {Predicate, PredicateOptions} from './predicate.js';
+import {BasePredicate} from './base-predicate.js';
 
 export {Shape};
 

source/predicates/predicate.ts

@@ -1,9 +1,9 @@
 import is from '@sindresorhus/is';
-import {ArgumentError} from '../argument-error';
-import {not} from '../operators/not';
-import {BasePredicate, testSymbol} from './base-predicate';
-import {Main} from '..';
-import {generateArgumentErrorMessage} from '../utils/generate-argument-error-message';
+import {ArgumentError} from '../argument-error.js';
+import {not} from '../operators/not.js';
+import {BasePredicate, testSymbol} from './base-predicate.js';
+import {Main} from '../index.js';
+import {generateArgumentErrorMessage} from '../utils/generate-argument-error-message.js';
 
 /**
 Function executed when the provided validation fails.

source/predicates/set.ts

@@ -1,7 +1,7 @@
-import isEqual = require('lodash.isequal');
-import hasItems from '../utils/has-items';
-import ofType from '../utils/of-type';
-import {Predicate, PredicateOptions} from './predicate';
+import isEqual from 'lodash.isequal';
+import hasItems from '../utils/has-items.js';
+import ofType from '../utils/of-type.js';
+import {Predicate, PredicateOptions} from './predicate.js';
 
 export class SetPredicate<T = any> extends Predicate<Set<T>> {
 	/**

source/predicates/string.ts

@@ -1,6 +1,6 @@
 import is from '@sindresorhus/is';
-import valiDate = require('vali-date');
-import {Predicate, PredicateOptions} from './predicate';
+import valiDate from 'vali-date';
+import {Predicate, PredicateOptions} from './predicate.js';
 
 export class StringPredicate extends Predicate<string> {
 	/**

source/predicates/typed-array.ts

@@ -1,5 +1,5 @@
 import {TypedArray} from 'type-fest';
-import {Predicate} from './predicate';
+import {Predicate} from './predicate.js';
 
 export class TypedArrayPredicate<T extends TypedArray> extends Predicate<T> {
 	/**

source/predicates/weak-map.ts

@@ -1,5 +1,5 @@
-import hasItems from '../utils/has-items';
-import {Predicate, PredicateOptions} from './predicate';
+import hasItems from '../utils/has-items.js';
+import {Predicate, PredicateOptions} from './predicate.js';
 
 export class WeakMapPredicate<KeyType extends object = object> extends Predicate<WeakMap<KeyType, unknown>> {
 	/**

source/predicates/weak-set.ts

@@ -1,5 +1,5 @@
-import hasItems from '../utils/has-items';
-import {Predicate, PredicateOptions} from './predicate';
+import hasItems from '../utils/has-items.js';
+import {Predicate, PredicateOptions} from './predicate.js';
 
 export class WeakSetPredicate<T extends object = object> extends Predicate<WeakSet<T>> {
 	/**

source/test.ts

@@ -1,4 +1,4 @@
-import {testSymbol, BasePredicate} from './predicates/base-predicate';
+import {testSymbol, BasePredicate} from './predicates/base-predicate.js';
 
 /**
 Validate the value against the provided predicate.

source/utils/infer-label.ts

@@ -1,7 +1,7 @@
 import * as fs from 'fs';
 import {CallSite} from 'callsites';
-import isValidIdentifier from './is-valid-identifier';
-import isNode from './node/is-node';
+import isValidIdentifier from './is-valid-identifier.js';
+import isNode from './node/is-node.js';
 
 // Regex to extract the label out of the `ow` function call
 const labelRegex = /^.*?\((?<label>.*?)[,)]/;

source/utils/match-shape.ts

@@ -1,7 +1,7 @@
 import is from '@sindresorhus/is';
-import test from '../test';
-import {isPredicate} from '../predicates/base-predicate';
-import {BasePredicate} from '..';
+import test from '../test.js';
+import {isPredicate} from '../predicates/base-predicate.js';
+import {BasePredicate} from '../index.js';
 
 // eslint-disable-next-line @typescript-eslint/consistent-indexed-object-style
 export interface Shape {

source/utils/of-type-deep.ts

@@ -1,6 +1,6 @@
 import is from '@sindresorhus/is';
-import {Predicate} from '../predicates/predicate';
-import test from '../test';
+import {Predicate} from '../predicates/predicate.js';
+import test from '../test.js';
 
 const ofTypeDeep = (object: unknown, predicate: Predicate): boolean => {
 	if (!is.plainObject(object)) {

source/utils/of-type.ts

@@ -1,5 +1,5 @@
-import test from '../test';
-import {BasePredicate} from '../predicates/base-predicate';
+import test from '../test.js';
+import {BasePredicate} from '../predicates/base-predicate.js';
 
 /**
 Test all the values in the collection against a provided predicate.