Javascript SCSS脚本生成

我对perfix:css有问题。我不太了解scss的构建过程，如果有人知道问题出在哪里，请帮助我

"watch:sass": "node-sass src/styles/global.scss src/assets/css/style.css -w",
            "compile:sass": "node-sass src/styles/global.scss src/assets/css/style.comp.css",
            "prefix:css": "postcss --use autoprefixer -b 'last 10 versions' src/assets/css/style.comp.css -o src/assets/css/style.prefix.css",
            "compress:css": "node-sass src/assets/css/style.prefix.css src/assetscss/style.css --output-style compressed",
            "build:css": "npm-run-all compile:sass prefix:css compress:css"