[elpa] externals/js2-mode 4eaf98e 2/2: Support for dynamic imports and `import.meta`

[ELPA Syncer]

branch: externals/js2-mode
commit 4eaf98e3cc3789381a37a05cd70a248db9ac8c1b
Author: Dmitry Gutov <dgutov@yandex.ru>
Commit: Dmitry Gutov <dgutov@yandex.ru>

    Support for dynamic imports and `import.meta`
    
    Resolves #547.
    
    For future reference, Mozilla's corresponding bug reports are:
    
    https://bugzilla.mozilla.org/show_bug.cgi?id=1427610
    https://bugzilla.mozilla.org/show_bug.cgi?id=1484948
    
    (Changes in src/frontend/Parser.cpp)
    
    But there's little point in creating new node types for these syntax
    cases for our purposes, so here goes the simpler change.
---
 NEWS.md         | 2 ++
 js2-mode.el     | 9 ++++++++-
 tests/parser.el | 9 +++++++++
 3 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/NEWS.md b/NEWS.md
index bf6f109..932d99d 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -2,6 +2,8 @@
 
 ## Next
 
+* Support for dynamic imports and `import.meta`
+  ([#547](https://github.com/mooz/js2-mode/issues/547)).
 * Support for trailing comma in arrow function parameters
   ([#480](https://github.com/mooz/js2-mode/issues/480)).
 * Support for `for await of` syntax 
([#543](https://github.com/mooz/js2-mode/pull/543)).
diff --git a/js2-mode.el b/js2-mode.el
index 8327ca3..a3630b6 100644
--- a/js2-mode.el
+++ b/js2-mode.el
@@ -8612,7 +8612,7 @@ node are given relative start positions and correct 
lengths."
     (aset parsers js2-FOR       #'js2-parse-for)
     (aset parsers js2-FUNCTION  #'js2-parse-function-stmt)
     (aset parsers js2-IF        #'js2-parse-if)
-    (aset parsers js2-IMPORT    #'js2-parse-import)
+    (aset parsers js2-IMPORT    #'js2-parse-import-declaration-or-expr)
     (aset parsers js2-LC        #'js2-parse-block)
     (aset parsers js2-LET       #'js2-parse-let-stmt)
     (aset parsers js2-NAME      #'js2-parse-name-or-label)
@@ -8742,6 +8742,11 @@ Return value is a list (EXPR LP RP), with absolute paren 
positions."
     (js2-node-add-children pn (car cond) if-true if-false)
     pn))
 
+(defun js2-parse-import-declaration-or-expr ()
+  (if (memq (js2-peek-token) `(,js2-LP ,js2-DOT))
+      (js2-parse-expr-stmt)
+    (js2-parse-import)))
+
 (defun js2-parse-import ()
   "Parse import statement. The current token must be js2-IMPORT."
   (unless (js2-ast-root-p js2-current-scope)
@@ -10651,6 +10656,8 @@ array-literals, array comprehensions and regular 
expressions."
       (js2-parse-attribute-access))
      ((= tt js2-NAME)
       (js2-parse-name tt))
+     ((= tt js2-IMPORT)
+      (js2-create-name-node nil nil "import"))
      ((= tt js2-NUMBER)
       (setq node (make-js2-number-node))
       (when (and js2-in-use-strict-directive
diff --git a/tests/parser.el b/tests/parser.el
index 78115f3..95d3f5d 100644
--- a/tests/parser.el
+++ b/tests/parser.el
@@ -802,6 +802,15 @@ the test."
 (js2-deftest-parse import-default-and-namespace "import robert as bob, * as 
lib from 'src/lib';")
 (js2-deftest-parse import-from-this-module "import {url} from this module;")
 
+(js2-deftest-parse import-meta
+  "console.log(import.meta);")
+
+(js2-deftest-parse import-dynamic-stmt
+  "import('/modules/my-module.js').then((module) => {});")
+
+(js2-deftest-parse import-dynamic-expr
+  "let v = import('/modules/my-module.js').then((module) => {  
module.getV();\n});")
+
 ;; Module Exports
 
 (js2-deftest export-rexport "export * from 'other/lib'"