dynamically execute commands in npm script with variables .

• Use dynamic data form package.json (name, verison, project path) for npm scripts.
• change npm script current working directory.

package.json:

    "execPath": "./../../",
    "scripts": {
        "dev": "exec-x \"cross-env Cells_EE_DIR={{project}} npm run dev  \"",
        "build": "exec-x \"cross-env Cells_EE_DIR={{project}} npm run build\"",
        "rebuild:native": "exec-x \" npm run rebuild -f -w sharp sqlite3 -m {{project}}/native {{name}}-v{{version}} \""
    },

npm i -D exec-c

"exec-x \"cross-env XXX={{project}} npm run dev  \""

• {{project}}：project path (current modules path)
• {{name}}：modules path
• {{version}}：modules version
• {{workPath}}：current working directory (Will be affected by execPath)

1. add execPath into package.json
2. use exec-x in npm script

package.json:

    "name": "YOU-MODULES"
+   "execPath": "./../../",
    "scripts": {
        "dev": "exec-x \"cross-env Cells_EE_DIR={{project}} npm run dev  \"",
    },