diff --git a/desktop/angular/.eslintrc.json b/desktop/angular/.eslintrc.json
new file mode 100644
index 00000000..4a0b4c0e
--- /dev/null
+++ b/desktop/angular/.eslintrc.json
@@ -0,0 +1,51 @@
+{
+  "root": true,
+  "ignorePatterns": [
+    "projects/**/*"
+  ],
+  "overrides": [
+    {
+      "files": [
+        "*.ts"
+      ],
+      "extends": [
+        "eslint:recommended",
+        "plugin:@typescript-eslint/recommended",
+        "plugin:@angular-eslint/recommended",
+        "plugin:@angular-eslint/template/process-inline-templates"
+      ],
+      "rules": {
+        "@angular-eslint/directive-selector": [
+          "error",
+          {
+            "type": "attribute",
+            "prefix": "app",
+            "style": "camelCase"
+          }
+        ],
+        "@angular-eslint/component-selector": [
+          "error",
+          {
+            "type": "element",
+            "prefix": "app",
+            "style": "kebab-case"
+          }
+        ],
+        "@typescript-eslint/no-explicit-any": "off"
+      }
+    },
+    {
+      "files": [
+        "*.html"
+      ],
+      "extends": [
+        "plugin:@angular-eslint/template/recommended",
+        "plugin:@angular-eslint/template/accessibility"
+      ],
+      "rules": {
+        "@angular-eslint/template/click-events-have-key-events": "off",
+        "@angular-eslint/template/interactive-supports-focus": "off"
+      }
+    }
+  ]
+}
diff --git a/desktop/angular/src/app/shared/netquery/textql/lexer.ts b/desktop/angular/src/app/shared/netquery/textql/lexer.ts
index 008cbd6e..a3f2fe93 100644
--- a/desktop/angular/src/app/shared/netquery/textql/lexer.ts
+++ b/desktop/angular/src/app/shared/netquery/textql/lexer.ts
@@ -43,7 +43,7 @@ export class Lexer {
   }
 
   /** reads a number token */
-  private readNumber(): Token<TokenType.NUMBER> {
+  private readNumber(): Token<TokenType.NUMBER> | null {
     const start = this._input.pos;
 
     let has_dot = false;
@@ -59,9 +59,10 @@ export class Lexer {
       return isDigit(ch);
     });
 
-    if (!this._input.eof() && isIdentChar(this._input.peek())) {
-      this._input.revert(number.length + 1);
-      this._input.croak("invalid number character")
+    if (!this._input.eof() && !isWhitespace(this._input.peek())) {
+      this._input.revert(number.length);
+
+      return null;
     }
 
     return {
@@ -182,13 +183,11 @@ export class Lexer {
       return this.readString('\'', true);
     }
 
-    try {
-      if (isDigit(ch)) {
-        return this.readNumber();
+    if (isDigit(ch)) {
+      const number = this.readNumber();
+      if (number !== null) {
+        return number;
       }
-    } catch (err) {
-      // we ignore that error here as it may only happen for unqoted strings
-      // that start with a number.
     }
 
     if (ch === ':') {