style: update code format

.eslintrc.js

@@ -57,7 +57,7 @@ module.exports = {
     'max-depth': [ON, 3],
     'max-len': [1, 120, 4, { ignoreUrls: YES, ignoreRegExpLiterals: YES }],
     'max-lines-per-function': [ON, { max: 25, skipBlankLines: YES, skipComments: YES }],
-    'max-lines': ON,
+    'max-lines': OFF,
     'max-nested-callbacks': [ON, 3],  // default is 10
     'max-params': [ON, 3],
     'max-statements': [ON, 12],

src/proc-file.js

@@ -56,11 +56,21 @@ const procFile = function (fname, options, code) {
       }
       // Ignore non-string sources
       return typeof source === 'string'
-      ? jscc(source, fname, _getJsccOpts(options))
-      : source
-    }).then(ret =>{
-      if(ret.map) {
-        ret.map.sources[0] = fname    
+        ? jscc(source, fname, _getJsccOpts(options))
+        : source
+    }).then((ret) => {
+      /*
+        change the relative source path in the source map to the input file path
+        explanation:
+          rollup will resolve source path through the file's directory absolute path
+          and the source path in the returned source map by the plugin
+
+            new Source(resolve(dirname(module.id), originalSourcemap.sourceRoot || '.', source), sourcesContent[i])
+
+          @see https://github.com/rollup/rollup/blob/v1.15.6/src/utils/collapseSourcemaps.ts#L196
+      */
+      if (ret.map) {
+        ret.map.sources[0] = fname
       }
       return ret
     })