Avoids making unneeded fs changes during build

Avoids unneeded build re-triggering while watching

.fantasticonrc.js

@@ -24,8 +24,8 @@ const config = {
 	},
 	pathOptions: {
 		woff2: './dist/glicons.woff2',
-		scss: './src/webviews//apps/shared/glicons.scss',
-		html: './icons-contribution.json',
+		scss: './dist/glicons.scss',
+		html: './dist/icons-contribution.json',
 		json: './images/icons/template/mapping.json',
 	},
 };

scripts/applyIconsContribution.js

@@ -3,9 +3,20 @@ const fs = require('fs');
 
 // Update the icons contribution point in package.json
 const package = require('../package.json');
-package.contributes.icons = require('../icons-contribution.json').icons;
+const icons = require('../dist/icons-contribution.json').icons;
+if (JSON.stringify(package.contributes.icons) !== JSON.stringify(icons)) {
+	package.contributes.icons = icons;
+	const packageJSON = `${JSON.stringify(package, undefined, '\t')}\n`;
+	fs.writeFileSync('./package.json', packageJSON);
+}
 
-const packageJSON = `${JSON.stringify(package, undefined, '\t')}\n`;
+fs.rmSync('./dist/icons-contribution.json');
 
-fs.writeFileSync('./package.json', packageJSON);
-fs.rmSync('./icons-contribution.json');
+// Update the scss file
+const newScss = fs.readFileSync('./dist/glicons.scss', 'utf8');
+const scss = fs.readFileSync('./src/webviews/apps/shared/glicons.scss', 'utf8');
+if (scss !== newScss) {
+	fs.writeFileSync('./src/webviews/apps/shared/glicons.scss', newScss);
+}
+
+fs.rmSync('./dist/glicons.scss');