update

node_modules/detective-scss/index.js

@@ -0,0 +1,64 @@
+'use strict';
+
+const Walker = require('node-source-walk');
+const sass = require('gonzales-pe');
+const debug = require('debug')('detective-scss');
+
+/**
+ * Extract the @import statements from a given scss file's content
+ *
+ * @param  {String} fileContent
+ * @return {String[]}
+ */
+module.exports = function detective(fileContent) {
+  if (typeof fileContent === 'undefined') { throw new Error('content not given'); }
+  if (typeof fileContent !== 'string') { throw new Error('content is not a string'); }
+
+  let dependencies = [];
+  let ast;
+
+  try {
+    debug('content: ' + fileContent);
+    ast = sass.parse(fileContent, { syntax: 'scss' });
+  } catch (e) {
+    debug('parse error: ', e.message);
+    ast = {};
+  }
+
+  detective.ast = ast;
+
+  const walker = new Walker();
+
+  walker.walk(ast, function(node) {
+    if (!isImportStatement(node)) { return; }
+
+    dependencies = dependencies.concat(extractDependencies(node));
+  });
+
+  return dependencies;
+};
+
+function isImportStatement(node) {
+  if (!node || node.type !== 'atrule') { return false; }
+  if (!node.content.length || node.content[0].type !== 'atkeyword') { return false; }
+
+  const atKeyword = node.content[0];
+
+  if (!atKeyword.content.length) { return false; }
+
+  const importKeyword = atKeyword.content[0];
+
+  if (importKeyword.type !== 'ident' || importKeyword.content !== 'import') { return false; }
+
+  return true;
+}
+
+function extractDependencies(importStatementNode) {
+  return importStatementNode.content
+  .filter(function(innerNode) {
+    return innerNode.type === 'string' || innerNode.type === 'ident';
+  })
+  .map(function(identifierNode) {
+    return identifierNode.content.replace(/["']/g, '');
+  });
+}