ESM/ES6

.editorconfig

@@ -0,0 +1,15 @@
+; EditorConfig file: https://EditorConfig.org
+; Install the "EditorConfig" plugin into your editor to use
+
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+insert_final_newline = true
+indent_style = space
+indent_size = 2
+trim_trailing_whitespace = true
+
+[*.md]
+indent_size = 4

.eslintignore

@@ -0,0 +1,4 @@
+dist
+node_modules
+test/js
+docs/index.html

.eslintrc.cjs

@@ -0,0 +1,80 @@
+'use strict';
+
+module.exports = {
+  extends: [
+    'ash-nazg/sauron-node-overrides'
+  ],
+  parser: '@babel/eslint-parser',
+  parserOptions: {
+    requireConfigFile: false,
+    ecmaVersion: 2020
+  },
+  env: {
+    es6: true
+  },
+  settings: {
+    polyfills: [
+      'Math.trunc',
+      'Number.parseFloat',
+      'Symbol.iterator'
+    ]
+  },
+  overrides: [{
+    files: '*.cjs',
+    extends: ['ash-nazg/sauron-node-script-overrides'],
+    rules: {
+      // Internal use
+      'node/shebang': 'off'
+    }
+  }, {
+    files: 'test/index.js',
+    parser: '@babel/eslint-parser',
+    parserOptions: {
+      requireConfigFile: false,
+      ecmaVersion: 2020,
+      sourceType: 'module'
+    },
+    rules: {
+      'no-shadow': ['error', {allow: ['assert']}],
+      'node/no-unsupported-features/es-syntax': ['error', {
+        ignores: ['dynamicImport', 'modules']
+      }],
+      'no-console': 0
+    }
+  }, {
+    files: '*.html',
+    env: {
+      browser: true
+    },
+    globals: {
+      JSONPullParser: true
+    },
+    rules: {
+      'import/unambiguous': 0
+    }
+  }, {
+    files: ['*.md/*.js'],
+    globals: {
+      json: true,
+      require: true,
+      JSONPullParser: true
+    },
+    rules: {
+      'import/no-commonjs': 0,
+      'import/unambiguous': 0,
+      'no-shadow': ['error', {
+        allow: ['JSONPullParser']
+      }],
+      'no-unused-vars': ['error', {
+        varsIgnorePattern: 'token|JSONPullParser'
+      }],
+      'node/no-missing-require': ['error', {
+        allowModules: ['json-pull-parser']
+      }]
+    }
+  }],
+  rules: {
+    'no-bitwise': 0,
+    'unicorn/consistent-destructuring': 0
+  }
+};

README.md

@@ -1,18 +1,18 @@
-JSONPullParser
---------------
+# JSONPullParser
 
-**Introduction**
+## Introduction
 
-`JSONPullParser` is a dropin replacement for `JSON.parse` and also provides a
-pull based api.
+A dropin replacement for `JSON.parse` and also provides a pull based api.
 
-**Usage**
+## Usage
 
-```javascript
-let parser  = new JSONPullParser(json);
-let builder = new JSONPullParser.ObjectBuilder();
+```js
+const parser = new JSONPullParser(json);
+const builder = new JSONPullParser.ObjectBuilder();
 
-for (let token of parser) builder.handle(token);
+for (const token of parser) {
+  builder.handle(token);
+}
 ```
 
 See live [demo](http://www.susi.se/json-pull-parser/demo.html)!
@@ -26,23 +26,25 @@ If your *JavaScript* engine supports [Symbol.iterator](https://developer.mozilla
 then your parser is *iterable*.
 
 ```javascript
-let parser  = new JSONPullParser(json);
+const parser = new JSONPullParser(json);
 
-for (let token of parser) {
+for (const token of parser) {
   // use token
 }
 ```
 
-Otherwise you have to get an *iterator* from `parser.tokens()`
+Otherwise you have to get an *iterator* from `parser.tokens()`:
 
 ```javascript
-var parser = new JSONPullParser(json);
-var it     = parser.tokens();
+const parser = new JSONPullParser(json);
+const it = parser.tokens();
 
 while (true) {
-  var step = it.next();
-  if (step.done) break;
-  var token = step.value;
+  const step = it.next();
+  if (step.done) {
+    break;
+  }
+  const token = step.value;
   // use token
 }
 ```
@@ -53,20 +55,20 @@ and `EndArray` at the correct depth.
 
 ## Installation
 
-**Node (CommonJS)**
+### Node (CommonJS)
 
 ```sh
 $ npm install json-pull-parser
 ```
 
-```javascript
-const JSONPullParser = require('json-pull-parser')
+```js
+const JSONPullParser = require('json-pull-parser');
 ```
 
-**Browser**
+### Browser
 
 ```html
-<script src="https://unpkg.com/json-pull-parser/dist/json-pull-parser.js"></script>
+<script src="https://unpkg.com/json-pull-parser/dist/json-pull-parser.cjs"></script>
 ```
 
 ## ObjectBuilder
@@ -77,43 +79,46 @@ const JSONPullParser = require('json-pull-parser')
 `JSON.parse` could be implemented by simply feeding all the tokens to
 `ObjectBuilder`.
 
-```javascript
-JSON.parse = function (source)
-{
-  let parser = new JSONPullParser(source);
-  let builder = new JSONPullParser.ObjectBuilder();
-  for (let token of parser) builder.handle(token);
+```js
+JSON.parse = function (source) {
+  const parser = new JSONPullParser(source);
+  const builder = new JSONPullParser.ObjectBuilder();
+  for (const token of parser) {
+    builder.handle(token);
+  }
   return builder.value;
-}
+};
 ```
 
 ## Custom handling of events
 
-```javascript
-let parser = new JSONPullParser(json);
+```js
+const parser = new JSONPullParser(json);
 
-for (let token of parser) {
+for (const token of parser) {
   switch (token.type) {
-    case JSONPullParser.StartObject:
-      break;
-    case JSONPullParser.EndObject:
-      break;
-    case JSONPullParser.StartArray:
-      break;
-    case JSONPullParser.EndArray:
-      break;
-    case JSONPullParser.String:
-      break;
-    case JSONPullParser.Number:
-      break;
-    case JSONPullParser.TrueLiteral:
-      break;
-    case JSONPullParser.FalseLiteral:
-      break;
-    case JSONPullParser.NullLiteral:
-      break;
-    case JSONPullParser.Error:
-      break;
+  case JSONPullParser.StartObject:
+    break;
+  case JSONPullParser.EndObject:
+    break;
+  case JSONPullParser.StartArray:
+    break;
+  case JSONPullParser.EndArray:
+    break;
+  case JSONPullParser.String:
+    break;
+  case JSONPullParser.Number:
+    break;
+  case JSONPullParser.TrueLiteral:
+    break;
+  case JSONPullParser.FalseLiteral:
+    break;
+  case JSONPullParser.NullLiteral:
+    break;
+  case JSONPullParser.Error:
+    break;
+  default:
+    throw new Error('Should not get here');
   }
 }
 

bin/verify.cjs

@@ -0,0 +1,13 @@
+#!/usr/bin/env node
+'use strict';
+
+const JSONPullParser = require('../');
+
+let content = '';
+process.stdin.resume();
+process.stdin.on('data', (data) => {
+  content += data.toString();
+});
+
+// eslint-disable-next-line no-console -- CLI
+process.stdin.on('end', () => console.log(JSONPullParser.parse(content)));

dist/json-pull-parser.cjs

@@ -0,0 +1,2 @@
+!function(e,t){"object"==typeof exports&&"undefined"!=typeof module?module.exports=t():"function"==typeof define&&define.amd?define(t):(e="undefined"!=typeof globalThis?globalThis:e||self).JSONPullParser=t()}(this,(function(){"use strict";class e{constructor(){this.handler={ref:this,add(e){return this.ref.value=e,e}}}startObject(){this.handler={old:this.handler,key:null,ref:this.handler.add({}),add(e){return null===this.key?this.key=e:(this.ref[this.key]=e,this.key=null),e}}}endObject(){this.handler=this.handler.old}startArray(){this.handler={old:this.handler,ref:this.handler.add([]),add(e){return this.ref.push(e),e}}}add(e){this.handler.add(e)}handle(e){switch(e.type){case"{":this.startObject();break;case"}":this.endObject();break;case"[":this.startArray();break;case"]":this.endArray();break;case"string":case"number":case"true":case"false":case"null":this.add(e.value);break;case"error":throw new SyntaxError(e.value.message)}}}e.prototype.endArray=e.prototype.endObject;const t=16;class r{constructor(e){this.text=e}[Symbol.iterator](){return n(this.text)}tokens(){return n(this.text)}}function*n(e){const t={s:e,d:!1,f:0,l:e.length,e:1,c:0,r:1,x:[]};for(;;){if(t.f===t.l){if(!t.e&&!t.x.length)return;yield a(t.s,t.l,t.l,"Unexpected end of JSON input")}const e=u(t);t.f=e.last,yield e}}function a(e,t,n,a,s=1){let i=t,o=e.charCodeAt(i);for(;10!==o&&i>0;)o=e.charCodeAt(--i);10===o&&++i;const c="undefined:"+s,u=e.slice(i,t+1);let l="";for(let e=i;e<t;++e)l+=" ";l+="^";const d=new SyntaxError(c+"\n"+u+"\n"+l+"\n\n"+a);return{type:r.Error,value:d,first:t,last:n}}function s(e,t,n){return{type:r.StartObject,value:"{",first:t,last:t+1}}function i(e,t,n){return{type:r.EndObject,value:"}",first:t,last:t+1}}function o(e,t,n){return{type:r.StartArray,value:"[",first:t,last:t+1}}function c(e,t,n){return{type:r.EndArray,value:"]",first:t,last:t+1}}function u(e){const{s:n,l:u}=e;let{f:f}=e;for(;f<u;)switch(e.c++,n.charCodeAt(f)){case 10:e.c=0,e.r++;case 9:case 13:case 32:++f;continue;case 123:return 1&e.e?(e.e=18,e.x.push(32),s(0,f)):a(n,f,u,"Unexpected token { in JSON at position "+f,e.r);case 125:return e.e&t&&32===e.x.pop()?(e.e=e.x.length>0?20:0,i(0,f)):a(n,f,u,"Unexpected token } in JSON at position "+f,e.r);case 91:return 1&e.e?(e.e=17,e.x.push(64),o(0,f)):a(n,f,u,"Unexpected token [ in JSON at position "+f,e.r);case 93:return e.e&t&&64===e.x.pop()?(e.e=e.x.length>0?20:0,c(0,f)):a(n,f,u,"Unexpected token ] in JSON at position "+f,e.r);case 58:if(!(8&e.e))return a(n,f,u,"Unexpected token : in JSON at position "+f,e.r);e.e=1,++f;continue;case 44:if(!(4&e.e))return a(n,f,u,"Unexpected token , in JSON at position "+f,e.r);e.x.length>0&&32===e.x[e.x.length-1]?e.e=2:e.e=1,++f;continue;case 45:case 48:case 49:case 50:case 51:case 52:case 53:case 54:case 55:case 56:case 57:return 1&e.e?(e.e=e.x.length>0?20:0,l(n,f,u)):a(n,f,u,"Unexpected number in JSON at position "+f,e.r);case 34:return 2&e.e?(e.e=8,d(n,f,u)):1&e.e?(e.e=e.x.length>0?20:0,d(n,f,u)):a(n,f,u,"Unexpected string in JSON at position "+f,e.r);case 116:return 1&e.e?(e.e=e.x.length>0?20:0,h(n,f,u)):a(n,f,u,"Unexpected token t in JSON at position "+f,e.r);case 102:return 1&e.e?(e.e=e.x.length>0?20:0,p(n,f,u)):a(n,f,u,"Unexpected token f in JSON at position "+f,e.r);case 110:return 1&e.e?(e.e=e.x.length>0?20:0,x(n,f,u)):a(n,f,u,"Unexpected token n in JSON at position "+f,e.r);default:return a(n,f,u,"Unexpected token "+n[f]+" in JSON at position "+f,e.r)}return{type:r.EndDocument,first:u,last:u}}function l(e,t,n){let s=t,i=e.charCodeAt(s++);if(45===i&&(i=e.charCodeAt(s++)),48!==i)for(;i>=48&&i<=57;)i=e.charCodeAt(s++);else i=e.charCodeAt(s++);if(46===i)for(i=e.charCodeAt(s++);i>=48&&i<=57;)i=e.charCodeAt(s++);if(101===i||69===i){if(i=e.charCodeAt(s++),43!==i&&45!==i||(i=e.charCodeAt(s++)),i<48||i>57)return a(e,s-1,n,"Unexpected token "+e[s-1]+" in JSON at position "+(s-1));if(s>=n)return a(e,t,n,"Unexpected end of JSON input");for(;i>=48&&i<=57;)i=e.charCodeAt(s++)}return{type:r.Number,value:Number.parseFloat(e.slice(t,s-1)),first:t,last:s-1}}function d(e,t,n){let s=t+1;for(;s<n;){let t=e.charCodeAt(s++);if(34===t)break;if(92===t&&(t=e.charCodeAt(s++),117===t&&(s+=4,s>n)))return a(e,n,n,"Unexpected end of JSON input")}return{type:r.String,value:JSON.parse(e.slice(t,s)),source:e,first:t,last:s}}function f(e,t,r,n,s){if(t+n.length>r)return a(e,r,r,"Unexpected end of JSON input");for(const s of n){if(e.charCodeAt(t++)!==s)return a(e,t,r,"Unexpected token "+e[t-1]+" in JSON at position "+(t-1))}return s}function h(e,t,n){return f(e,t,n,[116,114,117,101],{type:r.TrueLiteral,value:!0,source:e,first:t,last:t+4})}function p(e,t,n){return f(e,t,n,[102,97,108,115,101],{type:r.FalseLiteral,value:!1,source:e,first:t,last:t+5})}function x(e,t,n){return f(e,t,n,[110,117,108,108],{type:r.NullLiteral,value:null,source:e,first:t,last:t+4})}return r.StartDocument="<",r.EndDocument=">",r.StartObject="{",r.EndObject="}",r.StartArray="[",r.EndArray="]",r.String="string",r.Number="number",r.TrueLiteral="true",r.FalseLiteral="false",r.NullLiteral="null",r.Whitespace="ws",r.Error="error",r.ObjectBuilder=e,r.parse=function(t,r){"string"!=typeof t&&(t=String(t));const a=new e;for(const e of n(t))a.handle(e);if(void 0===a.value)throw new SyntaxError("Unexpected end of JSON input");return a.value},r}));
+//# sourceMappingURL=json-pull-parser.cjs.map