Use easyjson for parsing library_index

Author: cmaglie

arduino/discovery/discovery_client/go.sum

@@ -192,6 +192,7 @@ github.com/ianlancetaylor/demangle v0.0.0-20200824232613-28f6c0f3b639/go.mod h1:
 github.com/inconshreveable/mousetrap v1.0.0/go.mod h1:PxqpIevigyE2G7u3NXJIT2ANytuPF1OarO4DADm73n8=
 github.com/jbenet/go-context v0.0.0-20150711004518-d14ea06fba99/go.mod h1:1lJo3i6rXxKeerYnT8Nvf0QmHCRC1n8sfWVwXF2Frvo=
 github.com/jessevdk/go-flags v1.4.0/go.mod h1:4FA24M0QyGHXBuZZK/XkWh8h0e1EYbRYJSGM75WSRxI=
+github.com/josharian/intern v1.0.0/go.mod h1:5DoeVV0s6jJacbCEi61lwdGj/aVlrQvzHFFd8Hwg//Y=
 github.com/json-iterator/go v1.1.11/go.mod h1:KdQUCv79m/52Kvf8AW2vK1V8akMuk1QjK/uOdHXbAo4=
 github.com/jstemmer/go-junit-report v0.0.0-20190106144839-af01ea7f8024/go.mod h1:6v2b51hI/fHJwM22ozAgKL4VKDeJcHhJFhtBdhmNjmU=
 github.com/jstemmer/go-junit-report v0.9.1/go.mod h1:Brl9GWCQeLvo8nXZwPNNblvFj/XSXhF0NWZEnDohbsk=
@@ -219,6 +220,7 @@ github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
 github.com/leonelquinteros/gotext v1.4.0 h1:2NHPCto5IoMXbrT0bldPrxj0qM5asOCwtb1aUQZ1tys=
 github.com/leonelquinteros/gotext v1.4.0/go.mod h1:yZGXREmoGTtBvZHNcc+Yfug49G/2spuF/i/Qlsvz1Us=
 github.com/magiconair/properties v1.8.5/go.mod h1:y3VJvCyxH9uVvJTWEGAELF3aiYNyPKd5NZ3oSwXrF60=
+github.com/mailru/easyjson v0.7.7/go.mod h1:xzfreul335JAWq5oZzymOObrkdz5UnU4kGfJJLY9Nlc=
 github.com/marcinbor85/gohex v0.0.0-20210308104911-55fb1c624d84/go.mod h1:Pb6XcsXyropB9LNHhnqaknG/vEwYztLkQzVCHv8sQ3M=
 github.com/mattn/go-colorable v0.0.9/go.mod h1:9vuHe8Xs5qXnSaW/c/ABM9alt+Vo+STaOChaDxuIBZU=
 github.com/mattn/go-colorable v0.1.8/go.mod h1:u6P/XSegPjTcexA+o6vUJrdnUu04hMope9wVRipJSqc=

arduino/libraries/librariesindex/json.go

@@ -16,12 +16,12 @@
 package librariesindex
 
 import (
-	"encoding/json"
 	"fmt"
 
 	"github.com/arduino/arduino-cli/arduino/resources"
 	"github.com/arduino/arduino-cli/i18n"
 	"github.com/arduino/go-paths-helper"
+	easyjson "github.com/mailru/easyjson"
 	semver "go.bug.st/relaxed-semver"
 )
 
@@ -64,7 +64,7 @@ func LoadIndex(indexFile *paths.Path) (*Index, error) {
 	}
 
 	var i indexJSON
-	err = json.Unmarshal(buff, &i)
+	err = easyjson.Unmarshal(buff, &i)
 	if err != nil {
 		return nil, fmt.Errorf(tr("parsing library_index.json: %s"), err)
 	}