Move SLP header struct to a file

Author: goto-bus-stop

src/SLP.js

@@ -1,7 +1,5 @@
-const Struct = require('awestruct')
 const createImageData = require('./createImageData')
-
-const t = Struct.types
+const headerStruct = require('./header')
 
 module.exports = SLP
 
@@ -32,27 +30,6 @@ const RENDER_OUTLINE = 0x05
 const RENDER_FILL = 0x06
 const RENDER_PLAYER_FILL = 0x07
 
-// SLP Header
-let headerStruct = Struct({
-  version: t.string(4),
-  numFrames: t.int32,
-  comment: t.string(24),
-
-  frames: t.array('numFrames', Struct({
-    cmdTableOffset: t.uint32,
-    outlineTableOffset: t.uint32,
-    paletteOffset: t.uint32,
-    properties: t.uint32,
-
-    width: t.int32,
-    height: t.int32,
-    hotspot: Struct({
-      x: t.int32,
-      y: t.int32
-    })
-  }))
-})
-
 const getPlayerColor = (pal, idx, player) => pal[idx + 16 * player]
 
 /**

src/SLPEncoder.js

@@ -1,6 +1,4 @@
-const Struct = require('awestruct')
-
-const t = Struct.types
+const headerStruct = require('./header')
 
 module.exports = SLPEncoder
 
@@ -31,27 +29,6 @@ const RENDER_OUTLINE = 0x05
 const RENDER_FILL = 0x06
 const RENDER_PLAYER_FILL = 0x07
 
-// SLP Header
-const headerStruct = Struct({
-  version: t.string(4),
-  numFrames: t.int32,
-  comment: t.string(24),
-
-  frames: t.array('numFrames', Struct({
-    cmdTableOffset: t.uint32,
-    outlineTableOffset: t.uint32,
-    paletteOffset: t.uint32,
-    properties: t.uint32,
-
-    width: t.int32,
-    height: t.int32,
-    hotspot: Struct({
-      x: t.int32,
-      y: t.int32
-    })
-  }))
-})
-
 function last (arr) {
   return arr[arr.length - 1]
 }

src/header.js

@@ -0,0 +1,24 @@
+const Struct = require('awestruct')
+
+const t = Struct.types
+
+// SLP Header
+module.exports = Struct({
+  version: t.string(4),
+  numFrames: t.int32,
+  comment: t.string(24),
+
+  frames: t.array('numFrames', Struct({
+    cmdTableOffset: t.uint32,
+    outlineTableOffset: t.uint32,
+    paletteOffset: t.uint32,
+    properties: t.uint32,
+
+    width: t.int32,
+    height: t.int32,
+    hotspot: Struct({
+      x: t.int32,
+      y: t.int32
+    })
+  }))
+})