A single pre-task to handle multiple tasks within the package.json file

Question

A single pre-task to handle multiple tasks within the package.json file

Currently, I am implementing Terraform for a specific project and I have been assigned two tasks within my package.json file. These tasks involve executing the commands terraform plan and terraform apply.

"scripts": {
    "tf:apply": "terraform apply",
    "tf:plan": "terraform plan"
}

It is essential for both of these commands to be preceded by a terraform get operation. Ideally, I am looking to streamline this process by incorporating just one pretask that can be applied to both.

My initial attempt involved using the following code snippet:

"scripts": {
    "pretf:*": "terraform get",
    "tf:apply": "terraform apply",
    "tf:plan": "terraform plan"
}

Unfortunately, this approach did not yield the desired outcome.

Is there a way to accomplish this utilizing NPM or Yarn exclusively? Or is it inevitable for me to specify the same pretask for each of these tasks separately?

javascript json npm package.json yarnpkg

Answer 1

Answer №1

My usual approach is as follows:

"commands": {
    "tf:get": "terraform get",
    "tf:apply": "npm run tf:get && terraform apply",
    "tf:plan": "npm run tf:get && terraform plan"
}

Here is an alternative method that simulates a "tf:*" prehook. This is more suitable for those who are skilled in obscure and cryptic npm techniques:

"commands": {
    "pretf": "terraform get",
    "tf": "terraform",
    "tf:apply": "npm run tf -- apply",
    "tf:plan": "npm run tf -- plan"
}

(Execute it with npm run tf:plan or directly with any argument like npm run tf -- whatever)

Answer 2

My usual approach is as follows:

"commands": {
    "tf:get": "terraform get",
    "tf:apply": "npm run tf:get && terraform apply",
    "tf:plan": "npm run tf:get && terraform plan"
}

Here is an alternative method that simulates a "tf:*" prehook. This is more suitable for those who are skilled in obscure and cryptic npm techniques:

"commands": {
    "pretf": "terraform get",
    "tf": "terraform",
    "tf:apply": "npm run tf -- apply",
    "tf:plan": "npm run tf -- plan"
}

(Execute it with npm run tf:plan or directly with any argument like npm run tf -- whatever)

Answer 3

Answer №2

Have you attempted to directly manage it using node.js?

You have the option to bind events inside your package.json directly to node scripts. Within these node scripts, you can run your terraform commands along with any common code like so:

var exec = require('child_process').exec;
var cmd = 'terraform apply';

// common code

exec(cmd, function(error, stdout, stderr) {
  // Output from the command will be in stdout
});

Another approach is to use a single node script that accepts a parameter to specify which terraform task to execute. You can define your common code within the script and then run the appropriate command based on the parameter provided:

"scripts": {
    "tf:apply": "node myscript.js --param=apply",
    "tf:plan": "node myscript.js --param=plan"
}

Within the node script, you can access the parameter like this:

console.log(process.argv.param);

Answer 4

Have you attempted to directly manage it using node.js?

You have the option to bind events inside your package.json directly to node scripts. Within these node scripts, you can run your terraform commands along with any common code like so:

var exec = require('child_process').exec;
var cmd = 'terraform apply';

// common code

exec(cmd, function(error, stdout, stderr) {
  // Output from the command will be in stdout
});

Another approach is to use a single node script that accepts a parameter to specify which terraform task to execute. You can define your common code within the script and then run the appropriate command based on the parameter provided:

"scripts": {
    "tf:apply": "node myscript.js --param=apply",
    "tf:plan": "node myscript.js --param=plan"
}

Within the node script, you can access the parameter like this:

console.log(process.argv.param);

A single pre-task to handle multiple tasks within the package.json file

Answer №1

Answer №2

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