update replaceint

README.md

@@ -11,11 +11,40 @@ Use [@apidevtools/json-schema-ref-parser](https://github.com/APIDevTools/json-sc
 
 Use [openapi-snippet](https://github.com/ErikWittern/openapi-snippet) to generate code samples automatically.
 
-### Convert string to int for int32 type in `.proto`
-
-ToDo
-
-### Import markown files
+### Convert the example and default values of integer type to int
+
+A `int32` type `port` defined in the `.proto` file is:
+
+```proto
+int32 port = 1 [(grpc.gateway.protoc_gen_openapiv2.options.openapiv2_field) = {
+    format: "int32",
+    default: "8080",
+    example: "8080"
+```
+
+The default JSON generated by `bufbuild/buf` is:
+
+```json
+"port": {
+  "type": "integer",
+  "format": "int32",
+  "example": 8080,
+  "default": "8080"
+}
+```
+
+`replaceint.js` replaces all integer values and the processed JSON file is:
+
+```json
+"port": {
+  "type": "integer",
+  "format": "int32",
+  "example": 8080,
+  "default": 8080
+}
+```
+
+### Import markdown files
 
 Embed external Markdown file contents to the `info.description` auto-generated JSON file. See [Redoc documentation](https://redocly.com/docs/api-reference-docs/guides/embedded-markdown/) for more information.
 

src/replaceint.js

@@ -25,4 +25,4 @@ async function replaceInteger(readf, writef) {
 
 }
 
-module.exports = replaceInteger;
+module.exports = replaceInteger;