Switch to ES modules

With some minor refactorings and fixes alongside.

Author: cdoublev

__tests__/css.js

@@ -1,13 +1,13 @@
 
-const { install } = require('../lib/index.js')
-const {
+import {
     INVALID_CUSTOM_PROPERTY_NAME,
     INVALID_CUSTOM_PROPERTY_OVERRIDE,
     INVALID_CUSTOM_PROPERTY_SYNTAX,
     INVALID_INITIAL_CUSTOM_PROPERTY_VALUE,
     INVALID_INITIAL_CUSTOM_PROPERTY_VALUE_UNIVERSAL,
     MISSING_INITIAL_CUSTOM_PROPERTY_VALUE,
-} = require('../lib/cssom/CSS-impl.js')
+} from '../lib/error.js'
+import { install } from '../lib/index.js'
 
 install()
 globalThis.document = { _registeredPropertySet: [] }

__tests__/definition.js

@@ -1,8 +1,8 @@
 
-const nonTerminal = require('../lib/values/definitions.js')
-const parseDefinition = require('../lib/parse/definition.js')
-const properties = require('../lib/properties/definitions.js')
-const { serializeDefinition: serialize } = require('../lib/serialize.js')
+import nonTerminal from '../lib/values/definitions.js'
+import parseDefinition from '../lib/parse/definition.js'
+import properties from '../lib/properties/definitions.js'
+import { serializeDefinition as serialize } from '../lib/serialize.js'
 
 /**
  * @param {...object} value
@@ -611,12 +611,12 @@ describe('errors', () => {
             'a{2}!',
             'a{0,∞}?',
             'a{1,∞}?',
-            `a?{2}`,
-            `a??`,
-            `a?*`,
-            `a?+`,
-            `a?#`,
-            `a?!`,
+            'a?{2}',
+            'a??',
+            'a?*',
+            'a?+',
+            'a?#',
+            'a?!',
             'a*{2}',
             'a*?',
             'a**',
@@ -632,12 +632,12 @@ describe('errors', () => {
             'a#+',
             'a##',
             'a#!',
-            `a!{2}`,
-            `a!?`,
-            `a!*`,
-            `a!+`,
-            `a!#`,
-            `a!!`,
+            'a!{2}',
+            'a!?',
+            'a!*',
+            'a!+',
+            'a!#',
+            'a!!',
         ]
         invalid.forEach(input => expect(() => parse(input)).toThrow())
     })

__tests__/match.js

@@ -1,9 +1,8 @@
 
-const { install } = require('../lib/index.js')
-// Do not import CSSOM implementations before the above import
-const matchMediaQueryList = require('../lib/match/media.js')
-const matchSupport = require('../lib/match/support.js')
-const { parseCSSGrammar } = require('../lib/parse/parser.js')
+import { install } from '../lib/index.js'
+import matchMediaQueryList from '../lib/match/media.js'
+import matchSupport from '../lib/match/support.js'
+import { parseCSSGrammar } from '../lib/parse/parser.js'
 
 install()
 

__tests__/media.js

@@ -1,7 +1,6 @@
 
-const { cssom, install } = require('../lib/index.js')
-// Do not import CSSOM implementations before the above import
-const { DELETE_UNEXISTENT_MEDIUM_ERROR } = require('../lib/cssom/MediaList-impl.js')
+import { cssom, install } from '../lib/index.js'
+import { DELETE_UNEXISTENT_MEDIUM_ERROR } from '../lib/error.js'
 
 install()
 

__tests__/permutation.js

@@ -1,5 +1,5 @@
 
-const { createPermutationIterator, getNthPermutation, getPermutationIndex } = require('../lib/parse/permutation.js')
+import { createPermutationIterator, getNthPermutation, getPermutationIndex } from '../lib/parse/permutation.js'
 
 const a = { type: 'keyword', value: 'a' }
 const b = { type: 'keyword', value: 'b' }

__tests__/stream.js

@@ -1,5 +1,5 @@
 
-const Stream = require('../lib/parse/stream.js')
+import Stream from '../lib/parse/stream.js'
 
 const string = 'hello'
 const stream = new Stream(string)