🐛 fix crash on dynamic import with identifier (#201)

Author: fisker

lib/util/visit-import.js

@@ -42,6 +42,16 @@ module.exports = function visitImport(
             "ImportExpression",
         ]](node) {
             const sourceNode = node.source
+
+            // skip `import(foo)`
+            if (
+                node.type === "ImportExpression" &&
+                sourceNode &&
+                sourceNode.type !== "Literal"
+            ) {
+                return
+            }
+
             const name = sourceNode && stripImportPathParams(sourceNode.value)
             if (name && (includeCore || !resolve.isCore(name))) {
                 targets.push(new ImportTarget(sourceNode, name, options))

tests/lib/rules/no-missing-import.js

@@ -166,6 +166,17 @@ ruleTester.run("no-missing-import", rule, {
             options: [{ resolvePaths: ["tests"] }],
             env: { node: true },
         },
+
+        // import()
+        ...(DynamicImportSupported
+            ? [
+                  {
+                      filename: fixture("test.js"),
+                      code: "function f() { import(foo) }",
+                      parserOptions: { ecmaVersion: 2020 },
+                  },
+              ]
+            : []),
     ],
     invalid: [
         {