@marko/compiler/dist/babel-plugin/plugins/migrate.js

Marko template to JS compiler.

"use strict";exports.__esModule = true;exports.visitor = void 0;var _babelUtils = require("@marko/compiler/babel-utils");
var _babel = require("@marko/compiler/internal/babel");

var _pluginHooks = require("../util/plugin-hooks");

/**
 * Applies custom migrators on tags.
 */
const visitor = exports.visitor = {
  MarkoTag: {
    enter(path) {
      const migrators = getMigratorsForTag(path);
      const { node } = path;
      for (const migrator of migrators) {
        (0, _pluginHooks.enter)(migrator, path, _babel.types);
        if (path.node !== node) break; // Stop if node is replaced.
      }
    },
    exit(path) {
      const migrators = getMigratorsForTag(path);
      const { node } = path;
      for (const migrator of migrators) {
        (0, _pluginHooks.exit)(migrator, path, _babel.types);
        if (path.node !== node) break; // Stop if node is replaced.
      }
    }
  }
};

function getMigratorsForTag(path) {
  const {
    hub: { file }
  } = path;
  const { watchFiles } = file.metadata.marko;
  const tagName = path.get("name.value").node || "*";
  const MIGRATOR_CACHE = file.MIGRATOR_CACHE =
  file.MIGRATOR_CACHE || Object.create(null);

  let migrators = MIGRATOR_CACHE[tagName];

  if (!migrators) {
    migrators = MIGRATOR_CACHE[tagName] = [];
    const addMigrators = (tagDef) => {
      if (tagDef && tagDef.migrators) {
        for (const migrator of tagDef.migrators) {
          if (migrator.path) {
            watchFiles.push(migrator.path);
          }
          migrators.push(migrator.hook.default || migrator.hook);
        }
      }
    };

    addMigrators((0, _babelUtils.getTagDef)(path));

    if (tagName !== "*") {
      addMigrators((0, _babelUtils.getTagDefForTagName)(file, "*"));
    }
  }

  return migrators;
}