Compiler optimization level for building WasmThemis (#919)

* optimize libthemis.js with compiler

* update package.json for wasm-themis

* Update CHANGELOG.md

Co-authored-by: vixentael <vixentael@users.noreply.github.com>

CHANGELOG.md

@@ -4,6 +4,10 @@
 
 Changes that are currently in development and have not been released yet.
 
+## [0.14.6](https://github.com/cossacklabs/themis/releases/tag/0.14.6), May 24th 2022
+
+**Reduce WasmThemis binary size x3, by increasing the compiler optimization level for WasmThemis build ([919](https://github.com/cossacklabs/themis/pull/919/)).**
+
 ## [0.14.5](https://github.com/cossacklabs/themis/releases/tag/0.14.5), April 14th 2022
 
 **Typescript compatibility issues in WasmThemis**

src/wrappers/themis/wasm/package.json

@@ -1,6 +1,6 @@
 {
   "name": "wasm-themis",
-  "version": "0.14.5",
+  "version": "0.14.6",
   "description": "Themis is a convenient cryptographic library for data protection.",
   "main": "dist/index.js",
   "types": "dist/index.d.ts",

src/wrappers/themis/wasm/wasmthemis.mk

@@ -39,7 +39,7 @@ $(BIN_PATH)/libthemis.js: LDFLAGS += -s LINKABLE=1
 $(BIN_PATH)/libthemis.js: LDFLAGS += -s ERROR_ON_UNDEFINED_SYMBOLS=0
 $(BIN_PATH)/libthemis.js: LDFLAGS += --pre-js $(WASM_PRE_JS)
 
-$(BIN_PATH)/libthemis.js: CMD = $(CC) -o $@ $(filter %.o %a, $^) $(LDFLAGS)
+$(BIN_PATH)/libthemis.js: CMD = $(CC) -o $@ $(filter %.o %a, $^) -O3 $(LDFLAGS)
 
 $(BIN_PATH)/libthemis.js: $(THEMIS_STATIC) $(WASM_RUNTIME) $(WASM_PRE_JS)
 	@mkdir -p $(@D)