fix: reset automatically before marked runs

BREAKING CHANGE: remove reset export

README.md

@@ -8,9 +8,9 @@ Add ids to headings like GitHub.
 import { marked } from "marked";
 import { gfmHeadingId } from "marked-gfm-heading-id";
 
-// or ES Module script
-// import { marked } from "https://cdn.jsdelivr.net/gh/markedjs/marked/src/marked.js";
-// import { gfmHeadingId } from "https://cdn.jsdelivr.net/gh/UziTech/marked-gfm-heading-id/src/index.js";
+// or UMD script
+// <script src="https://cdn.jsdelivr.net/npm/marked/lib/marked.umd.js"></script>
+// <script src="https://cdn.jsdelivr.net/npm/marked-gfm-heading-id/lib/index.umd.js"></script>
 
 const options = {
 	prefix: "my-prefix-",
@@ -22,21 +22,6 @@ marked("# heading");
 // <h1 id="my-prefix-heading">heading</h1>
 ```
 
-## `reset`
-
-If you want to reset the heading list between `marked` calls you must call `reset`.
-
-```js
-import { marked } from "marked";
-import { gfmHeadingId, reset } from "marked-gfm-heading-id";
-
-marked.use(gfmHeadingId());
-
-marked("# heading\n\n# heading");
-reset();
-marked("# heading\n\n# heading");
-```
-
 ## `options`
 
 | option |  type  | default | description                     |

lib/index.cjs

@@ -4,14 +4,14 @@ var GithubSlugger = require('github-slugger');
 
 let slugger;
 
-function reset() {
-  slugger = new GithubSlugger();
-}
-
 function gfmHeadingId({ prefix = '' } = {}) {
-  reset();
-
   return {
+    hooks: {
+      preprocess(src) {
+        slugger = new GithubSlugger();
+        return src;
+      }
+    },
     renderer: {
       heading(text, level, raw) {
         raw = raw.toLowerCase().trim().replace(/<[!\/a-z].*?>/ig, '');
@@ -22,4 +22,3 @@ function gfmHeadingId({ prefix = '' } = {}) {
 }
 
 exports.gfmHeadingId = gfmHeadingId;
-exports.reset = reset;

lib/index.umd.js

@@ -1,7 +1,7 @@
 (function (global, factory) {
   typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
   typeof define === 'function' && define.amd ? define(['exports'], factory) :
-  (global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.markedBidi = {}));
+  (global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.markedGfmHeadingId = {}));
 })(this, (function (exports) { 'use strict';
 
   // This module is generated by `script/`.
@@ -86,14 +86,14 @@
 
   let slugger;
 
-  function reset() {
-    slugger = new BananaSlug();
-  }
-
   function gfmHeadingId({ prefix = '' } = {}) {
-    reset();
-
     return {
+      hooks: {
+        preprocess(src) {
+          slugger = new BananaSlug();
+          return src;
+        }
+      },
       renderer: {
         heading(text, level, raw) {
           raw = raw.toLowerCase().trim().replace(/<[!\/a-z].*?>/ig, '');
@@ -104,6 +104,5 @@
   }
 
   exports.gfmHeadingId = gfmHeadingId;
-  exports.reset = reset;
 
 }));

package.json

@@ -37,15 +37,15 @@
   },
   "homepage": "https://github.com/markedjs/marked-gfm-heading-id#readme",
   "peerDependencies": {
-    "marked": ">1 <5"
+    "marked": "^4.3.0"
   },
   "dependencies": {
     "github-slugger": "^2.0.0"
   },
   "devDependencies": {
     "@babel/core": "^7.21.4",
     "@babel/preset-env": "^7.21.4",
-    "@rollup/plugin-node-resolve": "^15.0.1",
+    "@rollup/plugin-node-resolve": "^15.0.2",
     "@semantic-release/changelog": "^6.0.3",
     "@semantic-release/commit-analyzer": "^9.0.2",
     "@semantic-release/git": "^10.0.1",

spec/index.test.js

@@ -1,5 +1,5 @@
 import { marked } from 'marked';
-import { gfmHeadingId, reset } from '../src/index.js';
+import { gfmHeadingId } from '../src/index.js';
 
 describe('marked-gfm-heading-id', () => {
   beforeEach(() => {
@@ -12,13 +12,13 @@ describe('marked-gfm-heading-id', () => {
 # heading
 
 # heading
-`.trimStart();
+`;
 
-    const html = `
-<h1 id="heading">heading</h1>
+    expect(marked(markdown)).toMatchInlineSnapshot(`
+"<h1 id="heading">heading</h1>
 <h1 id="heading-1">heading</h1>
-`.trimStart();
-    expect(marked(markdown)).toBe(html);
+"
+`);
   });
 
   test('prefix', () => {
@@ -27,30 +27,33 @@ describe('marked-gfm-heading-id', () => {
 # heading
 
 # heading
-`.trimStart();
+`;
 
-    const html = `
-<h1 id="my-prefix-heading">heading</h1>
+    expect(marked(markdown)).toMatchInlineSnapshot(`
+"<h1 id="my-prefix-heading">heading</h1>
 <h1 id="my-prefix-heading-1">heading</h1>
-`.trimStart();
-    expect(marked(markdown)).toBe(html);
+"
+`);
   });
 
-  test('reset', () => {
+  test('reset for new marked call', () => {
     marked.use(gfmHeadingId());
     const markdown = `
 # heading
 
 # heading
-`.trimStart();
+`;
 
-    const html = `
-<h1 id="heading">heading</h1>
+    expect(marked(markdown)).toMatchInlineSnapshot(`
+"<h1 id="heading">heading</h1>
 <h1 id="heading-1">heading</h1>
-`.trimStart();
-    expect(marked(markdown)).toBe(html);
-    reset();
-    expect(marked(markdown)).toBe(html);
+"
+`);
+    expect(marked(markdown)).toMatchInlineSnapshot(`
+"<h1 id="heading">heading</h1>
+<h1 id="heading-1">heading</h1>
+"
+`);
   });
 
   test('weird headings', () => {
@@ -65,17 +68,17 @@ describe('marked-gfm-heading-id', () => {
 # Html in <em>header</em>
 
 # just <tags>test
-  
+
 # just <tags>test 2</tags>
-  
+
 # just <tags> test 2 spaces </tags>
-  
+
 # just <tags>test 3</any>
-  
+
 # just <tags>test 4<any>
-  
+
 # just <non tags
-  
+
 # just <tags with>spaces
 
 # just <#$%> weird chars
@@ -91,10 +94,10 @@ describe('marked-gfm-heading-id', () => {
 # Hello **world!**
 
 # <samp>Hello <ins>world!</ins></samp>
-`.trimStart();
+`;
 
-    const html = `
-<h1 id="foo-1">foo 1</h1>
+    expect(marked(markdown)).toMatchInlineSnapshot(`
+"<h1 id="foo-1">foo 1</h1>
 <h1 id="foo">foo</h1>
 <h1 id="foo-2">foo</h1>
 <h1 id="html-in-header">Html in <em>header</em></h1>
@@ -112,7 +115,7 @@ describe('marked-gfm-heading-id', () => {
 <h1 id="comment-">comment <!-- inside --></h1>
 <h1 id="hello-world">Hello <strong>world!</strong></h1>
 <h1 id="hello-world-1"><samp>Hello <ins>world!</ins></samp></h1>
-`.trimStart();
-    expect(marked(markdown)).toBe(html);
+"
+`);
   });
 });

src/index.js

@@ -1,14 +1,14 @@
 import GithubSlugger from 'github-slugger';
 let slugger;
 
-export function reset() {
-  slugger = new GithubSlugger();
-}
-
 export function gfmHeadingId({ prefix = '' } = {}) {
-  reset();
-
   return {
+    hooks: {
+      preprocess(src) {
+        slugger = new GithubSlugger();
+        return src;
+      }
+    },
     renderer: {
       heading(text, level, raw) {
         raw = raw.toLowerCase().trim().replace(/<[!\/a-z].*?>/ig, '');