forked from zhurui/management
42 lines
939 B
Markdown
42 lines
939 B
Markdown
# vinyl-sourcemaps-apply
|
|
|
|
Apply a source map to a vinyl file, merging it with preexisting source maps.
|
|
|
|
## Usage:
|
|
|
|
```javascript
|
|
var applySourceMap = require('vinyl-sourcemaps-apply');
|
|
applySourceMap(vinylFile, sourceMap);
|
|
```
|
|
|
|
### Example (Gulp plugin):
|
|
|
|
```javascript
|
|
var through = require('through2');
|
|
var applySourceMap = require('vinyl-sourcemaps-apply');
|
|
var myTransform = require('myTransform');
|
|
|
|
module.exports = function(options) {
|
|
|
|
function transform(file, encoding, callback) {
|
|
// generate source maps if plugin source-map present
|
|
if (file.sourceMap) {
|
|
options.makeSourceMaps = true;
|
|
}
|
|
|
|
// do normal plugin logic
|
|
var result = myTransform(file.contents, options);
|
|
file.contents = new Buffer(result.code);
|
|
|
|
// apply source map to the chain
|
|
if (file.sourceMap) {
|
|
applySourceMap(file, result.map);
|
|
}
|
|
|
|
this.push(file);
|
|
callback();
|
|
}
|
|
|
|
return through.obj(transform);
|
|
};
|
|
``` |