moved decralation.d.ts to src directory.

src/declaration.d.ts

@@ -0,0 +1,45 @@
+// CSS modules
+type CSSModuleClasses = { readonly [key: string]: string };
+
+declare module '*.module.css' {
+  const classes: CSSModuleClasses;
+  export default classes;
+}
+declare module '*.module.scss' {
+  const classes: CSSModuleClasses;
+  export default classes;
+}
+declare module '*.module.sass' {
+  const classes: CSSModuleClasses;
+  export default classes;
+}
+declare module '*.module.less' {
+  const classes: CSSModuleClasses;
+  export default classes;
+}
+declare module '*.module.styl' {
+  const classes: CSSModuleClasses;
+  export default classes;
+}
+declare module '*.module.stylus' {
+  const classes: CSSModuleClasses;
+  export default classes;
+}
+declare module '*.module.pcss' {
+  const classes: CSSModuleClasses;
+  export default classes;
+}
+declare module '*.module.sss' {
+  const classes: CSSModuleClasses;
+  export default classes;
+}
+
+// CSS
+declare module '*.css' {}
+declare module '*.scss' {}
+declare module '*.sass' {}
+declare module '*.less' {}
+declare module '*.styl' {}
+declare module '*.stylus' {}
+declare module '*.pcss' {}
+declare module '*.sss' {}