fix: move sourcemapping source out of the sourcemap (#2443)

Author: sheremet-va

packages/vite-node/src/source-map.ts

@@ -9,21 +9,24 @@ interface InstallSourceMapSupportOptions {
 let SOURCEMAPPING_URL = 'sourceMa'
 SOURCEMAPPING_URL += 'ppingURL'
 
-const VITE_NODE_SOURCEMAPPING_URL = `${SOURCEMAPPING_URL}=data:application/json;charset=utf-8;source=vite-node`
+const VITE_NODE_SOURCEMAPPING_SOURCE = '//# sourceMappingSource=vite-node'
+const VITE_NODE_SOURCEMAPPING_URL = `${SOURCEMAPPING_URL}=data:application/json;charset=utf-8`
 const VITE_NODE_SOURCEMAPPING_REGEXP = new RegExp(`//# ${VITE_NODE_SOURCEMAPPING_URL};base64,(.+)`)
-const OTHER_SOURCE_MAP_REGEXP = new RegExp(`//# ${SOURCEMAPPING_URL}=data:application/json[^,]+base64,(.+)`)
 
 export async function withInlineSourcemap(result: TransformResult) {
- const { code, map } = result
+ const map = result.map
+ let code = result.code
 
- if (!map || code.includes(VITE_NODE_SOURCEMAPPING_URL))
+ if (!map || code.includes(VITE_NODE_SOURCEMAPPING_SOURCE))
  return result
 
  // to reduce the payload size, we only inline vite node source map, because it's also the only one we use
- if (OTHER_SOURCE_MAP_REGEXP.test(code))
- result.code = code.replace(OTHER_SOURCE_MAP_REGEXP, '')
+ const OTHER_SOURCE_MAP_REGEXP = new RegExp(`//# ${SOURCEMAPPING_URL}=data:application/json[^,]+base64,(.+)`, 'g')
+ while (OTHER_SOURCE_MAP_REGEXP.test(code))
+ code = code.replace(OTHER_SOURCE_MAP_REGEXP, '')
 
- result.code = `${code}\n\n//# ${VITE_NODE_SOURCEMAPPING_URL};base64,${Buffer.from(JSON.stringify(map), 'utf-8').toString('base64')}\n`
+ const sourceMap = Buffer.from(JSON.stringify(map), 'utf-8').toString('base64')
+ result.code = `${code.trimEnd()}\n\n${VITE_NODE_SOURCEMAPPING_SOURCE}\n//# ${VITE_NODE_SOURCEMAPPING_URL};base64,${sourceMap}\n`
 
  return result
 }