diff --git a/packages/compiler-core/__tests__/parse.spec.ts b/packages/compiler-core/__tests__/parse.spec.ts
index 8879c454..2cbe7187 100644
--- a/packages/compiler-core/__tests__/parse.spec.ts
+++ b/packages/compiler-core/__tests__/parse.spec.ts
@@ -11,7 +11,7 @@ import {
   Position,
   TextNode
 } from '../src/ast'
-import { ParserErrorTypes } from '../src/errorTypes'
+import { ParserErrorTypes } from '../src/parserErrorTypes'
 import { parserOptionsMinimal as parserOptions } from '../src/parserOptionsMinimal'
 
 describe('parser/parse', () => {
diff --git a/packages/compiler-core/src/assert.ts b/packages/compiler-core/src/assert.ts
index 2f349812..e69de29b 100644
--- a/packages/compiler-core/src/assert.ts
+++ b/packages/compiler-core/src/assert.ts
@@ -1,5 +0,0 @@
-export function assert(condition: boolean, msg?: string) {
-  if (!condition) {
-    throw new Error(msg || `unexpected parser condition`)
-  }
-}
diff --git a/packages/compiler-core/src/index.ts b/packages/compiler-core/src/index.ts
index 2e25f608..7dcb2fff 100644
--- a/packages/compiler-core/src/index.ts
+++ b/packages/compiler-core/src/index.ts
@@ -1,3 +1,3 @@
 export { parse } from './parser'
 export * from './ast'
-export * from './errorTypes'
+export * from './parserErrorTypes'
diff --git a/packages/compiler-core/src/parser.ts b/packages/compiler-core/src/parser.ts
index fd9dd434..4d1fb84f 100644
--- a/packages/compiler-core/src/parser.ts
+++ b/packages/compiler-core/src/parser.ts
@@ -1,5 +1,4 @@
-import { assert } from './assert'
-import { ParserErrorTypes } from './errorTypes'
+import { ParserErrorTypes } from './parserErrorTypes'
 import {
   Node,
   AttributeNode,
@@ -60,93 +59,6 @@ export function parse(content: string, options: ParserOptions): RootNode {
   }
 }
 
-function last<T>(xs: T[]): T | undefined {
-  return xs[xs.length - 1]
-}
-
-function startsWith(source: string, searchString: string): boolean {
-  return source.startsWith(searchString)
-}
-
-function advanceBy(context: ParserContext, numberOfCharacters: number): void {
-  __DEV__ && assert(numberOfCharacters <= context.source.length)
-
-  const { column, source } = context
-  const str = source.slice(0, numberOfCharacters)
-  const lines = str.split(/\r?\n/)
-
-  context.source = source.slice(numberOfCharacters)
-  context.offset += numberOfCharacters
-  context.line += lines.length - 1
-  context.column =
-    lines.length === 1
-      ? column + numberOfCharacters
-      : Math.max(1, lines.pop()!.length)
-}
-
-function advanceSpaces(context: ParserContext): void {
-  const match = /^[\t\r\n\f ]+/.exec(context.source)
-  if (match) {
-    advanceBy(context, match[0].length)
-  }
-}
-
-function getCursor(context: ParserContext): Position {
-  const { column, line, offset } = context
-  return { column, line, offset }
-}
-
-function getNewPosition(
-  context: ParserContext,
-  start: Position,
-  numberOfCharacters: number
-): Position {
-  const { originalSource } = context
-  const str = originalSource.slice(start.offset, numberOfCharacters)
-  const lines = str.split(/\r?\n/)
-
-  const newPosition = {
-    column: start.column,
-    line: start.line,
-    offset: start.offset
-  }
-
-  newPosition.offset += numberOfCharacters
-  newPosition.line += lines.length - 1
-  newPosition.column =
-    lines.length === 1
-      ? start.column + numberOfCharacters
-      : Math.max(1, lines.pop()!.length)
-
-  return newPosition
-}
-
-function getSelection(
-  context: ParserContext,
-  start: Position,
-  end?: Position
-): SourceLocation {
-  end = end || getCursor(context)
-  return {
-    start,
-    end,
-    source: context.originalSource.slice(start.offset, end.offset)
-  }
-}
-
-function emitError(
-  context: ParserContext,
-  type: ParserErrorTypes,
-  offset?: number
-): void {
-  const loc = getCursor(context)
-  if (offset) {
-    loc.offset += offset
-    loc.column += offset
-  }
-  context.onError(type, loc)
-}
-
 function createParserContext(
   content: string,
   options: ParserOptions
@@ -165,6 +77,11 @@ function createParserContext(
   }
 }
 
+function getCursor(context: ParserContext): Position {
+  const { column, line, offset } = context
+  return { column, line, offset }
+}
+
 function parseChildren(
   context: ParserContext,
   mode: TextModes,
@@ -255,6 +172,88 @@ function parseChildren(
   return nodes
 }
 
+function getSelection(
+  context: ParserContext,
+  start: Position,
+  end?: Position
+): SourceLocation {
+  end = end || getCursor(context)
+  return {
+    start,
+    end,
+    source: context.originalSource.slice(start.offset, end.offset)
+  }
+}
+
+function last<T>(xs: T[]): T | undefined {
+  return xs[xs.length - 1]
+}
+
+function startsWith(source: string, searchString: string): boolean {
+  return source.startsWith(searchString)
+}
+
+function advanceBy(context: ParserContext, numberOfCharacters: number): void {
+  __DEV__ && assert(numberOfCharacters <= context.source.length)
+
+  const { column, source } = context
+  const str = source.slice(0, numberOfCharacters)
+  const lines = str.split(/\r?\n/)
+
+  context.source = source.slice(numberOfCharacters)
+  context.offset += numberOfCharacters
+  context.line += lines.length - 1
+  context.column =
+    lines.length === 1
+      ? column + numberOfCharacters
+      : Math.max(1, lines.pop()!.length)
+}
+
+function advanceSpaces(context: ParserContext): void {
+  const match = /^[\t\r\n\f ]+/.exec(context.source)
+  if (match) {
+    advanceBy(context, match[0].length)
+  }
+}
+
+function getNewPosition(
+  context: ParserContext,
+  start: Position,
+  numberOfCharacters: number
+): Position {
+  const { originalSource } = context
+  const str = originalSource.slice(start.offset, numberOfCharacters)
+  const lines = str.split(/\r?\n/)
+
+  const newPosition = {
+    column: start.column,
+    line: start.line,
+    offset: start.offset
+  }
+
+  newPosition.offset += numberOfCharacters
+  newPosition.line += lines.length - 1
+  newPosition.column =
+    lines.length === 1
+      ? start.column + numberOfCharacters
+      : Math.max(1, lines.pop()!.length)
+
+  return newPosition
+}
+
+function emitError(
+  context: ParserContext,
+  type: ParserErrorTypes,
+  offset?: number
+): void {
+  const loc = getCursor(context)
+  if (offset) {
+    loc.offset += offset
+    loc.column += offset
+  }
+  context.onError(type, loc)
+}
+
 function isEnd(
   context: ParserContext,
   mode: TextModes,
@@ -918,3 +917,9 @@ const CCR_REPLACEMENTS: { [key: number]: number | undefined } = {
   0x9e: 0x017e,
   0x9f: 0x0178
 }
+
+function assert(condition: boolean, msg?: string) {
+  if (!condition) {
+    throw new Error(msg || `unexpected parser condition`)
+  }
+}
diff --git a/packages/compiler-core/src/errorTypes.ts b/packages/compiler-core/src/parserErrorTypes.ts
similarity index 100%
rename from packages/compiler-core/src/errorTypes.ts
rename to packages/compiler-core/src/parserErrorTypes.ts
diff --git a/packages/compiler-core/src/parserOptionsMinimal.ts b/packages/compiler-core/src/parserOptionsMinimal.ts
index e6f0576a..792d36c7 100644
--- a/packages/compiler-core/src/parserOptionsMinimal.ts
+++ b/packages/compiler-core/src/parserOptionsMinimal.ts
@@ -1,6 +1,6 @@
 import { TextModes, ParserOptions } from './parser'
 import { ElementNode, Namespaces, Position, Node } from './ast'
-import { ParserErrorTypes } from './errorTypes'
+import { ParserErrorTypes } from './parserErrorTypes'
 
 export const parserOptionsMinimal: ParserOptions = {
   delimiters: [`{{`, `}}`],