Fix parsing spread operator on require() (#2)

* Add test for using the spread operator on `require()`

* Fix typo in spread operator test

* Check if `require()` is preceded by a spread operator

Updated test to check both spreading inside an array and an object.

sloppy-require-parser.js

@@ -20,7 +20,7 @@ function parseCJS (src, result) {
       continue
     }
 
-    if (newWord(src, i) && !inComment(src, i)) {
+    if ((newWord(src, i) || isSpread(src, i)) && !inComment(src, i)) {
       const suffix = src.slice(i + 7)
       const m = suffix.match(CALL_WITH_STRING)
 
@@ -60,6 +60,11 @@ function newWord (src, i) {
   return !/^\w|["'`._]/.test(s)
 }
 
+function isSpread (src, i) {
+  const s = i > 0 ? src.slice(i - 3, i) : ''
+  return s === '...'
+}
+
 function inComment (src, i) {
   const pre = src.slice(i > 100 ? i - 100 : 0, i)
   return pre.indexOf('//', Math.max(pre.lastIndexOf('\n'), 0)) > -1 && src.slice(i, i + 100).indexOf('\n') > -1

test.mjs

@@ -34,6 +34,19 @@ test('basic module', function (t) {
   t.alike(res.resolutions.map(r => r.input), ['world', 'dynamic'])
 })
 
+test('spread require output', function (t) {
+  const res = parse(`
+      const b = [...require("./def/pear" )]
+      const c = { ...require("./obj" ) }
+      const d = {
+        ...require("./newline-obj" )
+      }
+    `, 'script')
+
+  t.is(res.type, 'script')
+  t.alike(res.resolutions.map(r => r.input), ['./def/pear', './obj', './newline-obj'])
+})
+
 test('script that falls back', function (t) {
   const res = parse(`
     import hello from 'world'