Implementing Custom Preprocessors in Vue with TypeScript

Vue's build process allows for custom preprocessors to be integrated, enabling powerful transformations of your code before it's bundled. This challenge tasks you with creating a simple preprocessor that modifies Vue components by adding a unique identifier to each component's name. This is useful for debugging, component tracking, or implementing advanced features like dynamic component registration.

Problem Description

You need to implement a custom preprocessor that takes a Vue component definition (represented as a string) and adds a unique identifier to the component's name property. If the component already has a name property, the identifier should be appended to it. If the component doesn't have a name property, one should be created with the identifier. The identifier should be a simple string "ComponentIdentifier_" followed by a unique numerical ID (starting from 1).

The preprocessor should parse the component string, identify the component definition, modify the name property as described, and return the modified component string. You'll need to handle various component structures, including those with and without existing name properties, and ensure the output is valid Vue component syntax.

Key Requirements:

• Identifier Generation: Generate a unique numerical ID for each component processed. A simple counter variable is sufficient for this challenge.
• Component Parsing: The preprocessor must be able to parse a Vue component string and locate the component definition. Assume the input is a valid Vue component string.
• Name Modification: Correctly modify the name property of the component, appending the identifier if it exists or creating it if it doesn't.
• Valid Vue Syntax: The output must be a valid Vue component string, maintaining the original structure and formatting as much as possible.
• TypeScript: The solution must be written in TypeScript.

Expected Behavior:

The preprocessor should take a Vue component string as input and return a modified Vue component string with the added identifier.

Examples

Example 1:

Input:
```vue
<template>
  <div>Hello</div>
</template>

<script>
export default {
  name: 'MyComponent'
}
</script>

Output:
```vue
<template>
  <div>Hello</div>
</template>

<script>
export default {
  name: 'MyComponentComponentIdentifier_1'
}
</script>

Explanation: The component already has a name property ('MyComponent'). The identifier 'ComponentIdentifier_1' is appended to it.

Example 2:

Input:
```vue
<template>
  <div>World</div>
</template>

<script>
export default {}
</script>

Output:
```vue
<template>
  <div>World</div>
</template>

<script>
export default {
  name: 'ComponentIdentifier_1'
}
</script>

Explanation: The component does not have a name property. A new name property is created with the value 'ComponentIdentifier_1'.

Example 3: (Edge Case - Multi-line component definition)

Input:
```vue
<template>
  <div>
    <p>This is a paragraph</p>
  </div>
</template>

<script>
export default
{
  name: 'AnotherComponent'
}
</script>

Output:
```vue
<template>
  <div>
    <p>This is a paragraph</p>
  </div>
</template>

<script>
export default
{
  name: 'AnotherComponentComponentIdentifier_1'
}
</script>

Explanation: The component already has a name property ('AnotherComponent'). The identifier 'ComponentIdentifier_1' is appended to it, even with multi-line formatting.

Constraints

• Input String Length: The input component string will be no longer than 10,000 characters.
• Component Structure: Assume the input is a valid Vue component string. Error handling for invalid Vue syntax is not required.
• Identifier Uniqueness: The identifier should be unique for each component processed within a single execution of the preprocessor. You can use a simple counter for this.
• Performance: The preprocessor should execute in a reasonable time (less than 100ms for typical component sizes). Optimization is not the primary focus, but avoid excessively inefficient algorithms.

Notes

• You can use regular expressions or string manipulation techniques to parse and modify the component string.
• Consider the different ways a component's name property might be defined (e.g., single-line vs. multi-line).
• Focus on correctly modifying the name property and maintaining valid Vue syntax.
• The identifier should be consistently formatted as "ComponentIdentifier_" followed by a numerical ID.
• The counter for the identifier should be initialized to 1 and incremented for each component processed.