code: function checkImportCall(node) {
      if (node.callee.type !== 'Import') return
      if (node.arguments.length !== 1) return
  
      const modulePath = node.arguments[0]
      if (modulePath.type !== 'Literal') return
      if (typeof modulePath.value !== 'string') return
  
      checkSourceValue(modulePath, node)
    }
docs: for esmodule dynamic `import()` calls