Protocol Buffer compiler, powered by Wire, that generates EcmasScript 6 compatible Javascript.
This currently has very limited support and validation. It's really a proof of concept at this point, so use it at your own risk.
Checkout the source and compile the jar.
./gradlew clean jarRun the jar, providing a path to the directory containing your .proto files, and a directory to write the resutling protos.js file to.
java -jar build/libs/wire-compiler-es6-1.0-SNAPSHOT.jar --proto-path=/path/to/protos --js-out=.The compiler will generate a single protos.js file containing classes for each Message in your .proto files. The resulting classes can be used like any other, and will validate property values when writing as JSON, and only write known properties.
Compiling this message:
syntax = "proto3";
message Foo {
string bar = 1;
uint32 baz = 2;
}Will generate this protos.js file.
module.exports.Foo = class Foo {
constructor(bar, baz) {
this.bar = bar
this.baz = baz
}
static from(properties) {
let bar = properties['bar']
let baz = properties['baz']
return new Foo(bar, baz)
}
validate() {
if ((typeof this.bar) !== 'string' && (typeof this.bar) !== 'undefined') {
throw Error('bar must be a string or undefined, but was ' + (typeof this.bar))
}
if ((typeof this.baz) !== 'number' && (typeof this.baz) !== 'undefined') {
throw Error('baz must be a number or undefined, but was ' + (typeof this.baz))
}
}
toJSON() {
this.validate()
return {
bar: this.bar,
baz: this.baz
}
}
}You can then use the protos.js file using require:
let protos = require('./protos.js')
let foo = new protos.Foo("bar", 1)
console.log(Json.stringify(foo))Copyright 2016 Ryan Harter.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.