Delete unused code

Author: Antonio Scandurra

lib/document.js

@@ -1,7 +1,7 @@
 const assert = require('assert')
 const DocumentTree = require('./document-tree')
 const SplitTree = require('./split-tree')
-const {ZERO_POINT, compare, traverse, traversal, characterIndexForPosition, extentForText} = require('./point-helpers')
+const {ZERO_POINT, compare, traverse, traversal, extentForText} = require('./point-helpers')
 
 module.exports =
 class Document {
@@ -1176,7 +1176,7 @@ class Document {
 
     for (let i = 0; i < operations.length; i++) {
       const operation = operations[i]
-      const {type, spliceId, deletion, insertion} = operation
+      const {type, spliceId} = operation
       if (spliceId) {
         const spliceIdString = spliceIdToString(spliceId)
         if (type === 'splice') newSpliceIds.add(spliceIdString)
@@ -1268,7 +1268,7 @@ class Document {
     } else if (compare(segmentEndOffset, offset) === 0) {
       return segment.nextSplit
     } else {
-      const [prefix, suffix] = this.splitSegment(splitTree, segment, traversal(offset, segment.offset))
+      const [, suffix] = this.splitSegment(splitTree, segment, traversal(offset, segment.offset))
       return suffix
     }
   }
@@ -1280,7 +1280,7 @@ class Document {
     if (compare(segmentEndOffset, offset) === 0) {
       return segment
     } else {
-      const [prefix, suffix] = this.splitSegment(splitTree, segment, traversal(offset, segment.offset))
+      const [prefix] = this.splitSegment(splitTree, segment, traversal(offset, segment.offset))
       return prefix
     }
   }
@@ -1459,24 +1459,6 @@ function isEmptyLogicalRange ({startDependencyId, offsetInStartDependency, endDe
   )
 }
 
-function markersEqual (a, b) {
-  return (
-    logicalRangesEqual(a.range, b.range) &&
-    a.exclusive === b.exclusive &&
-    a.reversed === b.reversed &&
-    a.tailed === b.tailed
-  )
-}
-
-function logicalRangesEqual (a, b) {
-  return (
-    spliceIdsEqual(a.startDependencyId, b.startDependencyId) &&
-    compare(a.offsetInStartDependency, b.offsetInStartDependency) === 0 &&
-    spliceIdsEqual(a.endDependencyId, b.endDependencyId) &&
-    compare(a.offsetInEndDependency, b.offsetInEndDependency) === 0
-  )
-}
-
 function spliceIdsEqual (a, b) {
   return a.site === b.site && a.seq === b.seq
 }

lib/split-tree.js

@@ -1,5 +1,5 @@
 const SplayTree = require('./splay-tree')
-const {ZERO_POINT, compare, traverse, traversal, characterIndexForPosition, extentForText} = require('./point-helpers')
+const {ZERO_POINT, compare, traverse, traversal, characterIndexForPosition} = require('./point-helpers')
 
 module.exports =
 class SplitTree extends SplayTree {