module-info.js
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module-info.js
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	var fs = require("fs");

	function ModuleInfo(path){
	this.readInfo(path);
	}

	ModuleInfo.prototype = new function(){
	var required_fields = ["prometheus-module-id"];
	var field_map = {
	"prometheus-module-id": "id",
	"prometheus-required-chips": "requires",
	"prometheus-defined-chips": "defines"
	}

	this.readInfo = function(path){
	var json_string = fs.readFileSync(path+"/package.json");
	var package_info = JSON.parse(json_string);
	for(var i in required_fields){
	if(!(required_fields[i] in package_info)){
	throw new Error("Missing field `"+required_fields[i] + "` in " + path);
	}
	}
	for(var field_name in field_map){
	this[field_map[field_name]] = package_info[field_name] \|\| [];
	}
	}
	}

	module.exports = ModuleInfo;