Progeny

Recursively finds dependencies of style and template source files.

Or configure it to do the same kind of thing with any other type of text file.

Usage

Call Progeny with an optional configuration object, it returns a reusable function. There are built-in configurations already for jade, stylus, less, and sass. Call that function with a path to a source file (and its source code if you already have it handy), and it will figure out all of that file's dependencies and sub-dependencies, passing an array of them to your callback.

Examples using path assume you already have var path = require('path');. You could just use strings like '/path/to/project', but you may run into cross-compatibility issues.

Quick and Simple

You can skip the config object and the source code, letting Progeny read the source from the file itself and apply a built-in configuration based on the file extension.

var filePath = path.join('path', 'to', 'project', 'style-or-template.jade');
require('progeny')()(null, filePath, function (err, dependencies) {
    // use the dependencies array in here
});

Optional Configuration Attributes

var progenyConfig = {
    // The file extension for the source code you want parsed
    // Will be derived from the source file path if not specified
    extension: 'styl',

    // Array of multiple file extensions to try when looking for dependencies
    extensionsList: ['scss', 'sass'],

    // Regexp to run on each line of source code to match dependency references
    // Make sure you wrap the file name part in (parentheses)
    regexp: /^\s*@import\s+['"]?([^'"]+)['"]?/,

    // File prefix to try (in addition to the raw value matched in the regexp)
    prefix: '_',

    // Matched stuff to exclude: string, regex, or array of either/both
    exclusion: /^compass/,

    // In case a match starts with a slash, the absolute path to apply
    rootPath: path.join('path', 'to', 'project')
};

More Examples

Process a list of files:

var progeny = require('progeny');
var getDependencies = progeny(progenyConfig);
myFiles.forEach( function (file) {
    getDependencies(file.source, file.path, function (err, deps) {
        if (err) throw new Error(err);
        file.dependencies = deps;
    });
});

Multiple configs:

var getDefaultDependencies = progeny();
var getCustomDependencies = progeny({
    extension: 'foo',
    regexp: /([^\s,]+)/
});

Process source code from a string without its file path:

var mySourceString; // assume this contains valid source code
progeny({
    // extension and rootPath must be specified for this to work
    // also need regexp if extension not one of the predefined ones
    extension: 'jade',
    rootPath: path.join('path', 'to', 'project')
})(mySourceString, null, function (err, deps) {});

License

MIT