Modernizr 3.0 command line

modernizr-cli.js

/*globals console, process, __dirname */

var modernizr = require('./lib/cli');
var fs = require('fs');

var args = process.argv.slice(2);
console.log('CLI arguments:', args);

if (args.length < 3) {
    console.error('Expects three arguments: config, output, minifiedOutput');
    process.exit(1);
}

var fileNames = {
    config: args[0],
    output: args[1],
    minifiedOutput: args[2]
};

//Read config file, and parse as JSON
var configFile = __dirname + '/' + fileNames.config;
fs.readFile(configFile, function(err, data) {
    if (err) {
        console.error('Failed to read config file:', configFile);
        process.exit(2);
    }
    var config;
    try {
        config = JSON.parse(data);
    } catch (x) {
        console.error('Failed to parse config file as valid JSON');
        process.exit(3);
    }

    //invoke the modernizr build step + write outputs to file
    modernizr.build(config, function(result) {
        var outputFile = __dirname + '/' + fileNames.output;
        fs.writeFile(outputFile, result.code, function(err) {
            if (err) {
                console.error('Failed to write to output file:', err);
            }
        });
        var minifiedOutputFile = __dirname + '/' + fileNames.minifiedOutput;
        fs.writeFile(minifiedOutputFile, result.min, function(err) {
            if (err) {
                console.error('Failed to write to minified output file:', err);
            }
        });
    });
});

modernizr-cli.js.md

Modernizr 3.0 command line

Want to use the Modernizer 3.0 (still in pre-release) via the command line?

Just plonk this file in the root of the directory where you have modernizr checked out, and run it

Sample usage

git clone git@github.com:Modernizr/Modernizr.git modernizr
cd modernizr
wget https://gist.githubusercontent.com/bguiz/9926259/raw/README.md #plonked. `curl` works too.
cp ./lib/config-all.json ./config-custom.json
#edit config-custom.json
node modernizr-cli.js config-custom.json modernizr-custom.js modernizr-custom.min.js

Thanks a ton for writing this up!

@patrickkettner pleasure - glad it helped!

Turned this into a command line utility: modernizr-cli