fix mutex

README.md

@@ -1,6 +1,6 @@
 # JETY
 
-JSON, ENV, YAML, TOML
+JSON, ENV, TOML, YAML
 
 This is a package for collapsing multiple configuration stores (env+json, env+yaml, env+toml) and writing them back to a centralized config.
 

jety.go

@@ -162,8 +162,6 @@ func (c *ConfigManager) SetEnvPrefix(prefix string) {
 }
 
 func (c *ConfigManager) ReadInConfig() error {
-	c.mutex.Lock()
-	defer c.mutex.Unlock()
 	// assume config = map[string]any
 	confFileData, err := readFile(c.configFileUsed, c.configType)
 	if err != nil {
@@ -174,12 +172,18 @@ func (c *ConfigManager) ReadInConfig() error {
 		lower := strings.ToLower(k)
 		conf[lower] = ConfigMap{Key: k, Value: v}
 	}
+	c.mutex.Lock()
 	c.mapConfig = conf
+	c.mutex.Unlock()
+	c.collapse()
 	return nil
 }
 
 func readFile(filename string, fileType configType) (map[string]any, error) {
 	fileData := make(map[string]any)
+	if _, err := os.Stat(filename); os.IsNotExist(err) {
+		return nil, ErrConfigFileNotFound
+	}
 	switch fileType {
 	case ConfigTypeTOML:
 		_, err := toml.DecodeFile(filename, &fileData)

setters.go

@@ -40,5 +40,7 @@ func (c *ConfigManager) SetDefault(key string, value any) {
 		} else {
 			c.combinedConfig[lower] = ConfigMap{Key: key, Value: value}
 		}
+	} else {
+		c.combinedConfig[lower] = c.mapConfig[lower]
 	}
 }