obj2json

Convert Wavefront .obj files to Three.js JSON format, using
Blender and its Python API. Bundles the
Three.js exporter
along with a custom script to drive the import / export.

Example:

var path = require("path");
var obj2json = require("obj2json");
// NOTE: The module can detect standard install locations for Blender on Linux
// and OS X, but also accepts a `blenderPath` option to provide a non-standard path
var opts = {
    inputFile: path.join(__dirname, "circle.obj"),
    outputFile: path.join(__dirname, "circle2.json")
};
obj2json(opts, function(err, outputFilePath) {
    if (err) {
        console.error("ERROR:", err);
    }
    else {
        console.log("Output file at:", outputFilePath);
    }
});

A promise-based interface is also available, based on Node 0.12+ native Promises:

var path = require("path");
var obj2json = require("obj2json/as-promised");
var opts = {
    inputFile: path.join(__dirname, "circle.obj"),
    outputFile: path.join(__dirname, "circle2.json")
};
obj2json(opts)
    .then(function(outputFilePath) {
        console.log("Output file at:", outputFilePath);
    })
    .catch(function (err) {
        console.error("ERROR:", err);
    });