Utility for stripping comments.

Author: chriseppstein

src/__tests__/stripComments.js

@@ -0,0 +1,12 @@
+import ava from "ava";
+import stripComments from "../../src/util/stripComments";
+
+ava("stripComments()", (t) => {
+    t.deepEqual(stripComments("aaa/**/bbb"), "aaabbb");
+    t.deepEqual(stripComments("aaa/*bbb"), "aaa");
+    t.deepEqual(stripComments("aaa/*xxx*/bbb"), "aaabbb");
+    t.deepEqual(stripComments("aaa/*/xxx/*/bbb"), "aaabbb");
+    t.deepEqual(stripComments("aaa/*x*/bbb/**/"), "aaabbb");
+    t.deepEqual(stripComments("/**/aaa/*x*/bbb/**/"), "aaabbb");
+    t.deepEqual(stripComments("/**/"), "");
+});

src/util/index.js

@@ -1,3 +1,4 @@
 export {default as unesc} from './unesc';
 export {default as getProp} from './getProp';
 export {default as ensureObject} from './ensureObject';
+export {default as stripComments} from './stripComments';

src/util/stripComments.js

@@ -0,0 +1,16 @@
+export default function stripComments (str) {
+    let s = "";
+    let commentStart = str.indexOf("/*");
+    let lastEnd = 0;
+    while (commentStart >= 0) {
+        s = s + str.slice(lastEnd, commentStart);
+        let commentEnd = str.indexOf("*/", commentStart + 2);
+        if (commentEnd < 0) {
+            return s;
+        }
+        lastEnd = commentEnd + 2;
+        commentStart = str.indexOf("/*", lastEnd);
+    }
+    s = s + str.slice(lastEnd);
+    return s;
+}