Function removeDuplicateImports

scripts/extractStarter.mjs:496–508

Removes duplicate import statements from a babel ast.

(ast)

/** Removes duplicate import statements from a babel ast. */
function removeDuplicateImports(ast) {
  let declared = new Set();
  traverse.default(ast, {
    noScope: true,
    ImportSpecifier(specifier) {
      if (declared.has(specifier.node.local.name)) {
        specifier.remove();
      } else {
        declared.add(specifier.node.local.name);
      }
    }
  });
}

/** Removes circular dependencies from the CSS, which breaks webpack. */
function removeCircularDeps(file, seen = new Set()) {