diff --git a/package.json b/package.json
index 0ca9d8b..9bc9ef9 100644
--- a/package.json
+++ b/package.json
@@ -14,7 +14,7 @@
   "scripts": {
     "clean": "rm -rf ./models ./utils ./lexer ./parser ./ast ./exceptions ./token",
     "build": "npm run clean && tsc",
-    "format": "prettier --write \"src/**/*.ts\" \"src/**/*.js\"",
+    "format": "prettier --write \"src/**/*.ts\"",
     "lint": "tslint -p tsconfig.json",
     "postversion": "git push && git push --tags",
     "prepare": "npm run build",
diff --git a/src/ast/ast.ts b/src/ast/ast.ts
index e644b2d..ef0f9a6 100644
--- a/src/ast/ast.ts
+++ b/src/ast/ast.ts
@@ -193,7 +193,7 @@ export class SnapExpression implements Expression {
 export namespace AmountModifiers {
   const values: string[] = ['s', 'm', 'h', 'd', 'w', 'M'];
 
-  export const valuesString = `(${values.map(v => `"${v}"`).join(',')})`;
+  export const valuesString = `(${values.map((v) => `"${v}"`).join(',')})`;
 
   export function checkModifier(modifier: string) {
     return values.includes(modifier);
@@ -202,7 +202,7 @@ export namespace AmountModifiers {
 export namespace SnapModifiers {
   const values: string[] = ['s', 'm', 'h', 'd', 'w', 'bw', 'M', 'mon', 'tue', 'wed', 'thu', 'fri', 'sat', 'sun'];
 
-  export const valuesString = `(${values.map(v => `"${v}"`).join(',')})`;
+  export const valuesString = `(${values.map((v) => `"${v}"`).join(',')})`;
 
   export function checkModifier(modifier: string) {
     return values.includes(modifier);
diff --git a/src/models/models.ts b/src/models/models.ts
index f464de9..4cbca1c 100644
--- a/src/models/models.ts
+++ b/src/models/models.ts
@@ -17,11 +17,11 @@ export class Token {
   }
 
   get isSnapped(): boolean {
-    return this.expressionNodes.some(node => node instanceof SnapExpression);
+    return this.expressionNodes.some((node) => node instanceof SnapExpression);
   }
 
   get isModified(): boolean {
-    return this.expressionNodes.some(node => node instanceof ModifierExpression);
+    return this.expressionNodes.some((node) => node instanceof ModifierExpression);
   }
 
   public static fromString(value: string, at?: Date): Token {
@@ -51,10 +51,10 @@ export class Token {
   }
 
   public toString(): string {
-    return this.expressionNodes.map(n => n.toString()).join('');
+    return this.expressionNodes.map((n) => n.toString()).join('');
   }
 
   public toJSON(): object[] {
-    return this.nodes.map(node => node.toJSON());
+    return this.nodes.map((node) => node.toJSON());
   }
 }