54 lines
2.1 KiB
Markdown
54 lines
2.1 KiB
Markdown
# @volar/source-map
|
|
|
|
Provides functionality related to source maps.
|
|
|
|
## API
|
|
|
|
### This package exports a `SourceMap` class with the following methods:
|
|
|
|
Params:
|
|
|
|
- `fallbackToAnyMatch`(default: false): allow the start and end offsets to come from different mappings.
|
|
- `filter?: (data: Data) => boolean)`(default: undefined): according to mapping: Mapping<MyDataType>.data, filter out offsets that do not meet the custom conditions.
|
|
|
|
Methods:
|
|
|
|
- `toSourceRange(generatedStart: number, generatedEnd: number, fallbackToAnyMatch: boolean, filter?: (data: Data) => boolean)`: Returns all source start and end offsets for the given generated start and end offsets.
|
|
|
|
- `toGeneratedRange(sourceStart: number, sourceEnd: number, fallbackToAnyMatch: boolean, filter?: (data: Data) => boolean) `: Returns all generated start and end offsets for the given source start and end offsets.
|
|
|
|
- `toSourceLocation(generatedOffset: number, filter?: (data: Data) => boolean)`: Returns all source offsets for a given generated offset.
|
|
|
|
- `toGeneratedLocation(sourceOffset: number, filter?: (data: Data) => boolean)`: Returns all generated offsets for a given source offset.
|
|
|
|
## Data Structures
|
|
|
|
### `Mapping`
|
|
|
|
The `Mapping` is a tuple that represents a mapping in the source map. It consists of the following elements:
|
|
|
|
- `source`: A string representing the source file. This can be `undefined`.
|
|
- `sourceOffsets`: Offsets in the source code.
|
|
- `generatedOffsets`: Offsets in the generated code.
|
|
- `data`: The data associated with this mapping. The type of this data is generic and can be specified when creating a `SourceMap` instance.
|
|
|
|
Here is an example of a `Mapping`:
|
|
|
|
```ts
|
|
let mapping: Mapping<MyDataType> = {
|
|
source: '.../sourceFile.ts',
|
|
sourceOffsets: [10],
|
|
generatedOffsets: [30],
|
|
lengths: [10],
|
|
data: myData,
|
|
};
|
|
```
|
|
|
|
In this example, `myData` is of type `MyDataType`, which is the type specified for the SourceMap instance.
|
|
|
|
Remember to replace `MyDataType` and `myData` with actual types and data that are relevant to your project.
|
|
|
|
## License
|
|
|
|
This project is licensed under the MIT License. See the [LICENSE](LICENSE) file for more details.
|