Use ESM

.gitignore

@@ -1,8 +1,5 @@
 .DS_Store
 *.log
-.nyc_output/
 coverage/
 node_modules/
-mdast-util-to-hast.js
-mdast-util-to-hast.min.js
 yarn.lock

.prettierignore

@@ -1,5 +1,2 @@
-.nyc_output/
 coverage/
-mdast-util-to-hast.js
-mdast-util-to-hast.min.js
 *.md

index.js

@@ -1,2 +1 @@
-'use strict'
-module.exports = require('./lib')
+export {toHast} from './lib/index.js'

lib/all.js

@@ -1,10 +1,6 @@
-'use strict'
+import {one} from './one.js'
 
-module.exports = all
-
-var one = require('./one')
-
-function all(h, parent) {
+export function all(h, parent) {
   var nodes = parent.children || []
   var length = nodes.length
   var values = []

lib/footer.js

@@ -1,12 +1,8 @@
-'use strict'
+import {thematicBreak} from './handlers/thematic-break.js'
+import {list} from './handlers/list.js'
+import {wrap} from './wrap.js'
 
-module.exports = generateFootnotes
-
-var thematicBreak = require('./handlers/thematic-break')
-var list = require('./handlers/list')
-var wrap = require('./wrap')
-
-function generateFootnotes(h) {
+export function footer(h) {
   var footnoteById = h.footnoteById
   var footnoteOrder = h.footnoteOrder
   var length = footnoteOrder.length

lib/handlers/blockquote.js

@@ -1,10 +1,6 @@
-'use strict'
+import {wrap} from '../wrap.js'
+import {all} from '../all.js'
 
-module.exports = blockquote
-
-var wrap = require('../wrap')
-var all = require('../all')
-
-function blockquote(h, node) {
+export function blockquote(h, node) {
   return h(node, 'blockquote', wrap(all(h, node), true))
 }

lib/handlers/break.js

@@ -1,9 +1,5 @@
-'use strict'
+import {u} from 'unist-builder'
 
-module.exports = hardBreak
-
-var u = require('unist-builder')
-
-function hardBreak(h, node) {
+export function hardBreak(h, node) {
   return [h(node, 'br'), u('text', '\n')]
 }

lib/handlers/code.js

@@ -1,10 +1,6 @@
-'use strict'
+import {u} from 'unist-builder'
 
-module.exports = code
-
-var u = require('unist-builder')
-
-function code(h, node) {
+export function code(h, node) {
   var value = node.value ? node.value + '\n' : ''
   // To do: next major, use `node.lang` w/o regex, the splitting’s been going
   // on for years in remark now.

lib/handlers/delete.js

@@ -1,9 +1,5 @@
-'use strict'
+import {all} from '../all.js'
 
-module.exports = strikethrough
-
-var all = require('../all')
-
-function strikethrough(h, node) {
+export function strikethrough(h, node) {
   return h(node, 'del', all(h, node))
 }

lib/handlers/emphasis.js

@@ -1,9 +1,5 @@
-'use strict'
+import {all} from '../all.js'
 
-module.exports = emphasis
-
-var all = require('../all')
-
-function emphasis(h, node) {
+export function emphasis(h, node) {
   return h(node, 'em', all(h, node))
 }

lib/handlers/footnote-reference.js

@@ -1,14 +1,10 @@
-'use strict'
+import {u} from 'unist-builder'
 
-module.exports = footnoteReference
-
-var u = require('unist-builder')
-
-function footnoteReference(h, node) {
+export function footnoteReference(h, node) {
   var footnoteOrder = h.footnoteOrder
   var identifier = String(node.identifier)
 
-  if (footnoteOrder.indexOf(identifier) === -1) {
+  if (!footnoteOrder.includes(identifier)) {
     footnoteOrder.push(identifier)
   }
 

lib/handlers/footnote.js

@@ -1,10 +1,6 @@
-'use strict'
+import {footnoteReference} from './footnote-reference.js'
 
-module.exports = footnote
-
-var footnoteReference = require('./footnote-reference')
-
-function footnote(h, node) {
+export function footnote(h, node) {
   var footnoteById = h.footnoteById
   var footnoteOrder = h.footnoteOrder
   var identifier = 1
@@ -21,14 +17,14 @@ function footnote(h, node) {
 
   footnoteById[identifier] = {
     type: 'footnoteDefinition',
-    identifier: identifier,
+    identifier,
     children: [{type: 'paragraph', children: node.children}],
     position: node.position
   }
 
   return footnoteReference(h, {
     type: 'footnoteReference',
-    identifier: identifier,
+    identifier,
     position: node.position
   })
 }

lib/handlers/heading.js

@@ -1,9 +1,5 @@
-'use strict'
+import {all} from '../all.js'
 
-module.exports = heading
-
-var all = require('../all')
-
-function heading(h, node) {
+export function heading(h, node) {
   return h(node, 'h' + node.depth, all(h, node))
 }

lib/handlers/html.js

@@ -1,10 +1,6 @@
-'use strict'
-
-module.exports = html
-
-var u = require('unist-builder')
+import {u} from 'unist-builder'
 
 // Return either a `raw` node in dangerous mode, otherwise nothing.
-function html(h, node) {
+export function html(h, node) {
   return h.dangerous ? h.augment(node, u('raw', node.value)) : null
 }

lib/handlers/image-reference.js

@@ -1,11 +1,7 @@
-'use strict'
+import normalize from 'mdurl/encode.js'
+import {revert} from '../revert.js'
 
-module.exports = imageReference
-
-var normalize = require('mdurl/encode')
-var revert = require('../revert')
-
-function imageReference(h, node) {
+export function imageReference(h, node) {
   var def = h.definition(node.identifier)
   var props
 

lib/handlers/image.js

@@ -1,10 +1,6 @@
-'use strict'
+import normalize from 'mdurl/encode.js'
 
-var normalize = require('mdurl/encode')
-
-module.exports = image
-
-function image(h, node) {
+export function image(h, node) {
   var props = {src: normalize(node.url), alt: node.alt}
 
   if (node.title !== null && node.title !== undefined) {

lib/handlers/index.js

@@ -1,28 +1,49 @@
-'use strict'
+import {blockquote} from './blockquote.js'
+import {hardBreak} from './break.js'
+import {code} from './code.js'
+import {strikethrough} from './delete.js'
+import {emphasis} from './emphasis.js'
+import {footnoteReference} from './footnote-reference.js'
+import {footnote} from './footnote.js'
+import {heading} from './heading.js'
+import {html} from './html.js'
+import {imageReference} from './image-reference.js'
+import {image} from './image.js'
+import {inlineCode} from './inline-code.js'
+import {linkReference} from './link-reference.js'
+import {link} from './link.js'
+import {listItem} from './list-item.js'
+import {list} from './list.js'
+import {paragraph} from './paragraph.js'
+import {root} from './root.js'
+import {strong} from './strong.js'
+import {table} from './table.js'
+import {text} from './text.js'
+import {thematicBreak} from './thematic-break.js'
 
-module.exports = {
-  blockquote: require('./blockquote'),
-  break: require('./break'),
-  code: require('./code'),
-  delete: require('./delete'),
-  emphasis: require('./emphasis'),
-  footnoteReference: require('./footnote-reference'),
-  footnote: require('./footnote'),
-  heading: require('./heading'),
-  html: require('./html'),
-  imageReference: require('./image-reference'),
-  image: require('./image'),
-  inlineCode: require('./inline-code'),
-  linkReference: require('./link-reference'),
-  link: require('./link'),
-  listItem: require('./list-item'),
-  list: require('./list'),
-  paragraph: require('./paragraph'),
-  root: require('./root'),
-  strong: require('./strong'),
-  table: require('./table'),
-  text: require('./text'),
-  thematicBreak: require('./thematic-break'),
+export const handlers = {
+  blockquote,
+  break: hardBreak,
+  code,
+  delete: strikethrough,
+  emphasis,
+  footnoteReference,
+  footnote,
+  heading,
+  html,
+  imageReference,
+  image,
+  inlineCode,
+  linkReference,
+  link,
+  listItem,
+  list,
+  paragraph,
+  root,
+  strong,
+  table,
+  text,
+  thematicBreak,
   toml: ignore,
   yaml: ignore,
   definition: ignore,

lib/handlers/inline-code.js

@@ -1,10 +1,6 @@
-'use strict'
+import {u} from 'unist-builder'
 
-module.exports = inlineCode
-
-var u = require('unist-builder')
-
-function inlineCode(h, node) {
+export function inlineCode(h, node) {
   var value = node.value.replace(/\r?\n|\r/g, ' ')
   return h(node, 'code', [u('text', value)])
 }

lib/handlers/link-reference.js

@@ -1,12 +1,8 @@
-'use strict'
+import normalize from 'mdurl/encode.js'
+import {revert} from '../revert.js'
+import {all} from '../all.js'
 
-module.exports = linkReference
-
-var normalize = require('mdurl/encode')
-var revert = require('../revert')
-var all = require('../all')
-
-function linkReference(h, node) {
+export function linkReference(h, node) {
   var def = h.definition(node.identifier)
   var props
 

lib/handlers/link.js

@@ -1,11 +1,7 @@
-'use strict'
+import normalize from 'mdurl/encode.js'
+import {all} from '../all.js'
 
-var normalize = require('mdurl/encode')
-var all = require('../all')
-
-module.exports = link
-
-function link(h, node) {
+export function link(h, node) {
   var props = {href: normalize(node.url)}
 
   if (node.title !== null && node.title !== undefined) {

lib/handlers/list-item.js

@@ -1,11 +1,7 @@
-'use strict'
+import {u} from 'unist-builder'
+import {all} from '../all.js'
 
-module.exports = listItem
-
-var u = require('unist-builder')
-var all = require('../all')
-
-function listItem(h, node, parent) {
+export function listItem(h, node, parent) {
   var result = all(h, node)
   var head = result[0]
   var loose = parent ? listLoose(parent) : listItemLoose(node)

lib/handlers/list.js

@@ -1,11 +1,7 @@
-'use strict'
+import {wrap} from '../wrap.js'
+import {all} from '../all.js'
 
-module.exports = list
-
-var wrap = require('../wrap')
-var all = require('../all')
-
-function list(h, node) {
+export function list(h, node) {
   var props = {}
   var name = node.ordered ? 'ol' : 'ul'
   var items
@@ -23,7 +19,7 @@ function list(h, node) {
   while (++index < length) {
     if (
       items[index].properties.className &&
-      items[index].properties.className.indexOf('task-list-item') !== -1
+      items[index].properties.className.includes('task-list-item')
     ) {
       props.className = ['contains-task-list']
       break

lib/handlers/paragraph.js

@@ -1,9 +1,5 @@
-'use strict'
+import {all} from '../all.js'
 
-module.exports = paragraph
-
-var all = require('../all')
-
-function paragraph(h, node) {
+export function paragraph(h, node) {
   return h(node, 'p', all(h, node))
 }

lib/handlers/root.js

@@ -1,11 +1,7 @@
-'use strict'
+import {u} from 'unist-builder'
+import {all} from '../all.js'
+import {wrap} from '../wrap.js'
 
-module.exports = root
-
-var u = require('unist-builder')
-var wrap = require('../wrap')
-var all = require('../all')
-
-function root(h, node) {
+export function root(h, node) {
   return h.augment(node, u('root', wrap(all(h, node))))
 }