How to use the protoFromFile function from protobufjs

nodePBFreader.js

GitHub: vross/mapnik-vector-tile-converter

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var protobuf = require('protobufjs');
var director = require('./director.js');
var converter = require('./converter.js');
var tile = require('./tile.js');

var proto = protobuf.protoFromFile("./../proto/vector_tile.proto");
var MapnikVector = proto.build("mapnik.vector");

parse = function (file) {
    var data = fs.readFileSync(file);

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+ 15 other calls in file

FeedReader.js

GitHub: availabs/GTFS-Realtime_Toolkit

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* @throws Will throw an error if the path or protofile aren't legit. 
* Won't break the reader because assignment never happens.
*/

   try {
       this.feedMessageDecoder =  ProtoBuf.protoFromFile(this.config.protofilePath)
                                          .build('transit_realtime')
                                          .FeedMessage.decode ;
   } catch (err) {

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+ 3 other calls in file