Add tests

tests/codeblocks/javascript/async_function.js

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+const asyncFunction = async () => {
+  return new Promise((resolve, reject) => {
+    setTimeout(() => {
+      resolve('Async function resolved');
+    }, 1000);
+  });
+};
+
+asyncFunction().then(console.log).catch(console.error);

tests/codeblocks/javascript/async_function.txt

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+ 0 module ``
+  1 function `const asyncFunction = async () =>`
+   2 block_delimiter `{`
+   2 statement `return`
+    3 code `new Promise((resolve, reject) =>`
+     4 block_delimiter `{`
+     4 code `setTimeout(() =>`
+      5 block_delimiter `{`
+      5 code `resolve`
+       6 code `('Async function resolved')`
+       6 block_delimiter `;`
+      5 block_delimiter `}`
+      5 code `,`
+      5 code `1000`
+      5 block_delimiter `)`
+      5 block_delimiter `;`
+     4 block_delimiter `}`
+     4 block_delimiter `)`
+    3 block_delimiter `;`
+   2 block_delimiter `}`
+   2 block_delimiter `;`
+  1 code `asyncFunction().then(console.log).catch`
+   2 code `(console.error)`
+   2 block_delimiter `;`

tests/codeblocks/javascript/treesitter_types.js

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+// 1. Variable Declarations
+let number = 10;
+const PI = 3.14;
+var oldSchoolVariable = 'This is old style';
+
+// 2. Function Declaration
+function greet(name) {
+  return `Hello, ${name}!`;
+}
+
+// 3. Arrow Function
+const square = (x) => x * x;
+
+// 4. Class Declaration
+class Person {
+  constructor(name, age) {
+    this.name = name;
+    this.age = age;
+  }
+
+  introduce() {
+    return `Hi, I'm ${this.name} and I'm ${this.age} years old.`;
+  }
+}
+
+// 5. Object Literal
+const obj = {
+  key: 'value',
+  method() {
+    return 'This is a method';
+  }
+};
+
+// 6. Array Declaration
+const array = [1, 2, 3, 4];
+
+// 7. Loops
+for (let i = 0; i < array.length; i++) {
+  console.log(array[i]);
+}
+
+array.forEach((element) => {
+  console.log(element);
+});
+
+// 8. Conditional
+if (number > 5) {
+  console.log('Number is greater than 5');
+} else if (number === 5) {
+  console.log('Number is 5 ');
+} else {
+  console.log('Number is smaller than 5');
+}
+
+if (number > 5)
+  console.log('Number is greater than 5');
+else
+  console.log('Number is 5 or smaller');
+
+// 9. Switch-case
+switch (number) {
+  case 10:
+    console.log('Number is 10');
+    break;
+  default:
+    console.log('Number is not 10');
+    break;
+}
+
+// 10. Try-catch
+try {
+  throw new Error('This is an error');
+} catch (error) {
+  console.error('Caught an error:', error.message);
+}
+
+
+// 12. Destructuring
+const { key } = obj;
+const [firstElement] = array;
+
+// 13. Spread/Rest
+const newObj = { ...obj, newKey: 'newValue' };
+const newArray = [...array, 5];
+
+// 14. Template Literals
+const message = `This is a number: ${number}`;
+
+// 15. Import/Export (common in modules)
+export { greet };
+import { greet } from './path-to-this-file';
+
+console.log('Demonstration complete.');

tests/codeblocks/javascript/treesitter_types.txt

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+ 0 Module ``
+  1 Comment `// 1. Variable Declarations (_1_Variable_Declaratio)`
+  1 Assignment `let number = (number)`
+   2 Code `10 (number.10)`
+   2 Code `; (number._)`
+  1 Assignment `const PI = (PI)`
+   2 Code `3.14 (PI.3_14)`
+   2 Code `; (PI._)`
+  1 Code `var oldSchoolVariable = 'This is old style'; (var_oldSchoolVariable_)`
+  1 Comment `// 2. Function Declaration (_2_Function_Declaratio)`
+  1 Function `function greet(name) (greet)`
+   2 Code `{ (greet._)`
+   2 Statement `return (greet.return)`
+    3 Code ``Hello, ${name}!` (greet.return._Hello_name_)`
+    3 Code `; (greet.return._)`
+   2 Code `} (greet.None_1)`
+  1 Comment `// 3. Arrow Function (_3_Arrow_Function)`
+  1 Function `const square = (x) => (square)`
+   2 Code `x * x (square.x_x)`
+   2 Code `; (square._)`
+  1 Comment `// 4. Class Declaration (_4_Class_Declaration)`
+  1 Class `class Person (Person)`
+   2 Code `{ (Person._)`
+   2 Constructor `constructor(name, age) (Person.constructor)`
+    3 Code `{ (Person.constructor._)`
+    3 Assignment `this.name = name; (Person.constructor.this_name_name_)`
+    3 Assignment `this.age = age; (Person.constructor.this_age_age_)`
+    3 Code `} (Person.constructor.None_1)`
+   2 Function `introduce() (Person.introduce)`
+    3 Code `{ (Person.introduce._)`
+    3 Statement `return (Person.introduce.return)`
+     4 Code ``Hi, I'm ${this.name} and I'm ${this.age} years old.` (Person.introduce.return._Hi_I_m_this_name_and)`
+     4 Code `; (Person.introduce.return._)`
+    3 Code `} (Person.introduce.None_1)`
+   2 Code `} (Person.None_1)`
+  1 Comment `// 5. Object Literal (_5_Object_Literal)`
+  1 Assignment `const obj = (obj)`
+   2 Code `{\n  key: 'value',\n  method() {\n    return 'This is a method';\n  }\n} (obj._)`
+   2 Code `; (obj.None_1)`
+  1 Comment `// 6. Array Declaration (_6_Array_Declaration)`
+  1 Assignment `const array = (array)`
+   2 Code `[1, 2, 3, 4] (array._1_2_3_4_)`
+   2 Code `; (array._)`
+  1 Comment `// 7. Loops (_7_Loops)`
+  1 Statement `for (let i = 0; i < array.length; i++) (for_let_i_0_i_array)`
+   2 Code `{\n  console.log(array[i]);\n} (for_let_i_0_i_array._)`
+  1 Call `array.forEach((element) => (array_forEach_element_)`
+   2 Code `{ (array_forEach_element_._)`
+   2 Call `console.log(element); (array_forEach_element_.console_log_element_)`
+   2 Code `} (array_forEach_element_.None_1)`
+   2 Code `) (array_forEach_element_.None_2)`
+  1 Comment `// 8. Conditional (_8_Conditional)`
+  1 Statement `if (number > 5) (if_number_5_)`
+   2 Code `{\n  console.log('Number is greater than 5');\n} (if_number_5_._)`
+   2 Statement `else if (number === 5) (if_number_5_.else_if_number_5_)`
+    3 Code `{\n  console.log('Number is 5 ');\n} (if_number_5_.else_if_number_5_._)`
+    3 Statement `else (if_number_5_.else_if_number_5_.else)`
+     4 Code `{\n  console.log('Number is smaller than 5');\n} (if_number_5_.else_if_number_5_.else._)`
+  1 Statement `if (number > 5) (None_2)`
+   2 Call `console.log (None_2.console_log)`
+    3 Code `( (None_2.console_log._)`
+    3 Code `'Number is greater than 5' (None_2.console_log._Number_is_greater_than_5)`
+    3 Code `) (None_2.console_log.None_2)`
+   2 Code `; (None_2._)`
+   2 Statement `else (None_2.else)`
+    3 Call `console.log (None_2.else.console_log)`
+     4 Code `( (None_2.else.console_log._)`
+     4 Code `'Number is 5 or smaller' (None_2.else.console_log._Number_is_5_or_smaller_)`
+     4 Code `) (None_2.else.console_log.None_2)`
+    3 Code `; (None_2.else._)`
+  1 Comment `// 9. Switch-case (_9_Switch_case)`
+  1 Statement `switch (number) (switch_number_)`
+   2 Code `{ (switch_number_._)`
+   2 Code `case 10:\n    console.log('Number is 10');\n    break; (switch_number_.case_10_)`
+   2 Code `default:\n    console.log('Number is not 10');\n    break; (switch_number_.default_)`
+   2 Code `} (switch_number_.None_3)`
+  1 Comment `// 10. Try-catch (_10_Try_catch)`
+  1 Code `try {\n  throw new Error('This is an error');\n} catch (error) {\n  console.error('Caught an error:', error.message);\n} (try_)`
+  1 Comment `// 12. Destructuring (_12_Destructuring)`
+  1 Assignment `const { key } = (key)`
+   2 Code `obj (key.obj)`
+   2 Code `; (key._)`
+  1 Assignment `const [firstElement] = (const_firstElement_)`
+   2 Code `array (const_firstElement_.array)`
+   2 Code `; (const_firstElement_._)`
+  1 Comment `// 13. Spread/Rest (_13_Spread_Rest)`
+  1 Assignment `const newObj = (newObj)`
+   2 Code `{ ...obj, newKey: 'newValue' } (newObj._obj_newKey_newVal)`
+   2 Code `; (newObj._)`
+  1 Assignment `const newArray = (newArray)`
+   2 Code `[...array, 5] (newArray._array_5_)`
+   2 Code `; (newArray._)`
+  1 Comment `// 14. Template Literals (_14_Template_Literals)`
+  1 Assignment `const message = (message)`
+   2 Code ``This is a number: ${number}` (message._This_is_a_number_numb)`
+   2 Code `; (message._)`
+  1 Comment `// 15. Import/Export (common in modules) (_15_Import_Export_com)`
+  1 Code `export { greet }; (export_greet_)`
+  1 Import `import { greet } from './path-to-this-file'; (import_greet_from_)`
+  1 Call `console.log (console_log)`
+   2 Code `( (console_log._)`
+   2 Code `'Demonstration complete.' (console_log._Demonstration_complete_)`
+   2 Code `) (console_log.None_2)`
+  1 Code `; (_)`