Rename each handler's description export to descriptor

Part of #280.

Author: asamuzaK

lib/normalize.js

@@ -41,7 +41,7 @@ const shorthandProperties = new Map([
   [
     border.property,
     {
-      definition: border.definition,
+      descriptor: border.descriptor,
       parse: border.parse,
       shorthandFor: new Map([
         ...border.shorthandFor,

lib/properties/background.js

@@ -245,7 +245,7 @@ module.exports.parse = (v, opt = {}) => {
   return bgValues;
 };
 
-module.exports.definition = {
+module.exports.descriptor = {
   set(v) {
     v = parsers.prepareValue(v);
     if (v === "" || parsers.hasVarFunc(v)) {

lib/properties/backgroundAttachment.js

@@ -31,7 +31,7 @@ module.exports.parse = (v, opt = {}) => {
   }
 };
 
-module.exports.definition = {
+module.exports.descriptor = {
   set(v) {
     v = parsers.prepareValue(v);
     if (parsers.hasVarFunc(v)) {

lib/properties/backgroundClip.js

@@ -31,7 +31,7 @@ module.exports.parse = (v, opt = {}) => {
   }
 };
 
-module.exports.definition = {
+module.exports.descriptor = {
   set(v) {
     v = parsers.prepareValue(v);
     if (parsers.hasVarFunc(v)) {

lib/properties/backgroundColor.js

@@ -20,7 +20,7 @@ module.exports.parse = (v, opt = {}) => {
   }
 };
 
-module.exports.definition = {
+module.exports.descriptor = {
   set(v) {
     v = parsers.prepareValue(v);
     if (parsers.hasVarFunc(v)) {

lib/properties/backgroundImage.js

@@ -33,7 +33,7 @@ module.exports.parse = (v, opt = {}) => {
   }
 };
 
-module.exports.definition = {
+module.exports.descriptor = {
   set(v) {
     v = parsers.prepareValue(v);
     if (parsers.hasVarFunc(v)) {

lib/properties/backgroundOrigin.js

@@ -31,7 +31,7 @@ module.exports.parse = (v, opt = {}) => {
   }
 };
 
-module.exports.definition = {
+module.exports.descriptor = {
   set(v) {
     v = parsers.prepareValue(v);
     if (parsers.hasVarFunc(v)) {

lib/properties/backgroundPosition.js

@@ -174,7 +174,7 @@ module.exports.parse = (v, opt = {}) => {
   }
 };
 
-module.exports.definition = {
+module.exports.descriptor = {
   set(v) {
     v = parsers.prepareValue(v);
     if (parsers.hasVarFunc(v)) {

lib/properties/backgroundRepeat.js

@@ -63,7 +63,7 @@ module.exports.parse = (v, opt = {}) => {
   }
 };
 
-module.exports.definition = {
+module.exports.descriptor = {
   set(v) {
     v = parsers.prepareValue(v);
     if (parsers.hasVarFunc(v)) {

lib/properties/backgroundSize.js

@@ -96,7 +96,7 @@ module.exports.parse = (v, opt = {}) => {
   }
 };
 
-module.exports.definition = {
+module.exports.descriptor = {
   set(v) {
     v = parsers.prepareValue(v);
     if (parsers.hasVarFunc(v)) {