Script de build.

package.json

@@ -4,7 +4,7 @@
     "description": "Linguagem de folhas de estilo para documentos em geral em português",
     "main": "index.js",
     "scripts": {
-        "empacotar": "rimraf ./dist && tsc && copyfiles -V ./bin/foles ./bin/foles.cmd ./dist && copyfiles -V ./package.json ./dist && copyfiles -V ./README.md ./dist",
+        "empacotar": "yarn rimraf ./dist && tsc && yarn copyfiles -V ./bin/foles ./bin/foles.cmd ./dist && yarn copyfiles -V ./package.json ./dist && yarn copyfiles -V ./README.md ./dist",
         "testes-unitarios": "jest --coverage",
         "testes-unitarios:insignias": "jest-coverage-badges --output ./recursos/imagens"
     },