@protobuf-ts/runtime-rpc
Version:
Runtime library for RPC clients generated by the protoc plugin "protobuf-ts"
63 lines (62 loc) • 2.18 kB
JavaScript
import { mergeBinaryOptions, mergeJsonOptions } from "@protobuf-ts/runtime";
/**
* Merges custom RPC options with defaults. Returns a new instance and keeps
* the "defaults" and the "options" unmodified.
*
* Merges `RpcMetadata` "meta", overwriting values from "defaults" with
* values from "options". Does not append values to existing entries.
*
* Merges "jsonOptions", including "jsonOptions.typeRegistry", by creating
* a new array that contains types from "options.jsonOptions.typeRegistry"
* first, then types from "defaults.jsonOptions.typeRegistry".
*
* Merges "binaryOptions".
*
* Merges "interceptors" by creating a new array that contains interceptors
* from "defaults" first, then interceptors from "options".
*
* Works with objects that extend `RpcOptions`, but only if the added
* properties are of type Date, primitive like string, boolean, or Array
* of primitives. If you have other property types, you have to merge them
* yourself.
*/
export function mergeRpcOptions(defaults, options) {
if (!options)
return defaults;
let o = {};
copy(defaults, o);
copy(options, o);
for (let key of Object.keys(options)) {
let val = options[key];
switch (key) {
case "jsonOptions":
o.jsonOptions = mergeJsonOptions(defaults.jsonOptions, o.jsonOptions);
break;
case "binaryOptions":
o.binaryOptions = mergeBinaryOptions(defaults.binaryOptions, o.binaryOptions);
break;
case "meta":
o.meta = {};
copy(defaults.meta, o.meta);
copy(options.meta, o.meta);
break;
case "interceptors":
o.interceptors = defaults.interceptors ? defaults.interceptors.concat(val) : val.concat();
break;
}
}
return o;
}
function copy(a, into) {
if (!a)
return;
let c = into;
for (let [k, v] of Object.entries(a)) {
if (v instanceof Date)
c[k] = new Date(v.getTime());
else if (Array.isArray(v))
c[k] = v.concat();
else
c[k] = v;
}
}