diff --git a/packages/jsdoc/cli.js b/packages/jsdoc/cli.js
index 2aadfb0d..eb3c6ca3 100644
--- a/packages/jsdoc/cli.js
+++ b/packages/jsdoc/cli.js
@@ -297,7 +297,7 @@ module.exports = (() => {
         const parser = require('jsdoc/src/parser');
         const plugins = require('jsdoc/plugins');
 
-        props.parser = parser.createParser(env.conf.parser);
+        props.parser = parser.createParser(env.conf.parser, env.conf);
 
         if (env.conf.plugins) {
             plugins.installPlugins(env.conf.plugins, props.parser);
diff --git a/packages/jsdoc/lib/jsdoc/src/parser.js b/packages/jsdoc/lib/jsdoc/src/parser.js
index 3b4c3985..0f755cd4 100644
--- a/packages/jsdoc/lib/jsdoc/src/parser.js
+++ b/packages/jsdoc/lib/jsdoc/src/parser.js
@@ -3,7 +3,6 @@
  */
 const _ = require('lodash');
 const astNode = require('jsdoc/src/astnode');
-const { conf } = require('jsdoc/env');
 const { EventEmitter } = require('events');
 const fs = require('fs');
 const { log } = require('@jsdoc/util');
@@ -45,7 +44,7 @@ class DocletCache {
 }
 
 // TODO: docs
-exports.createParser = type => {
+exports.createParser = (type, conf) => {
     let modulePath;
 
     if (!type) {
@@ -62,7 +61,7 @@ exports.createParser = type => {
         return null;
     }
 
-    return new (require(modulePath).Parser)();
+    return new (require(modulePath).Parser)(null, null, null, conf);
 };
 
 // TODO: docs
@@ -90,12 +89,13 @@ function definedInScope(doclet, basename) {
  */
 class Parser extends EventEmitter {
     // TODO: docs
-    constructor(builderInstance, visitorInstance, walkerInstance) {
+    constructor(builderInstance, visitorInstance, walkerInstance, conf) {
         super();
 
         this.clear();
 
         this._astBuilder = builderInstance || new (require('jsdoc/src/astbuilder').AstBuilder)();
+        this._conf = conf || {};
         this._visitor = visitorInstance || new (require('jsdoc/src/visitor').Visitor)();
         this._walker = walkerInstance || new (require('jsdoc/src/walker').Walker)();
 
@@ -155,7 +155,7 @@ class Parser extends EventEmitter {
      * var docs = jsdocParser.parse(myFiles);
      */
     parse(sourceFiles, encoding) {
-        encoding = encoding || conf.encoding || 'utf8';
+        encoding = encoding || this._conf.encoding || 'utf8';
 
         let filename = '';
         let sourceCode = '';
@@ -268,6 +268,7 @@ class Parser extends EventEmitter {
         let e = {
             filename: sourceName
         };
+        let sourceType;
 
         this.emit('fileBegin', e);
         log.info(`Parsing ${sourceName} ...`);
@@ -282,8 +283,9 @@ class Parser extends EventEmitter {
             sourceName = e.filename;
 
             sourceCode = pretreat(e.source);
+            sourceType = this._conf.source ? this._conf.source.type : undefined;
 
-            ast = this._astBuilder.build(sourceCode, sourceName, conf.source.type);
+            ast = this._astBuilder.build(sourceCode, sourceName, sourceType);
             if (ast) {
                 this._walkAst(ast, this._visitor, sourceName);
             }