marko-widgets/dist/components/var/migrate.mjs

<h1 align="center"> <!-- Logo --> <br/> marko-widgets@8 <br/>

// packages/marko-widgets/src/components/var/migrate.ts
import { types as t } from "@marko/compiler";
import { diagnosticDeprecate, diagnosticError } from "@marko/babel-utils";
import { isSourceBooleanAttribute } from "@marko/compat-utils";
var migrate_default = {
  exit(tag) {
    if (!tag.node.attributes.length) {
      diagnosticError(tag, {
        label: "The <var> tag requires a value.",
        fix() {
          tag.remove();
        }
      });
      return;
    }
    diagnosticDeprecate(tag, {
      label: 'The "<var>" tag is deprecated. Please use "$ <js_code>" for JavaScript in the template. See: https://github.com/marko-js/marko/wiki/Deprecation:-var,-assign,-invoke-tags',
      fix() {
        var _a;
        const statements = [];
        let condition;
        for (const attr of tag.get("attributes")) {
          const { node } = attr;
          if (t.isMarkoSpreadAttribute(node)) {
            diagnosticError(attr, {
              label: "Spread attributes are not supported in <var> tags.",
              fix() {
                attr.remove();
              }
            });
            continue;
          }
          if (node.name === "if" && ((_a = node.arguments) == null ? void 0 : _a.length)) {
            condition = node.arguments.length === 1 ? node.arguments[0] : t.sequenceExpression(node.arguments);
            continue;
          }
          statements.push(
            t.variableDeclaration("var", [
              t.variableDeclarator(
                t.identifier(node.name),
                isSourceBooleanAttribute(node) ? null : node.value
              )
            ])
          );
        }
        if (condition) {
          if (tag.node.body.body.length) {
            tag.replaceWith(
              t.markoTag(
                t.stringLiteral("if"),
                [],
                t.markoTagBody(
                  statements.map(
                    (it) => t.markoScriptlet([it])
                  ).concat(tag.node.body.body)
                ),
                [condition]
              )
            );
          } else {
            tag.replaceWith(
              t.markoScriptlet([
                t.ifStatement(condition, t.blockStatement(statements))
              ])
            );
          }
        } else {
          let body = statements.map(
            (it) => t.markoScriptlet([it])
          );
          if (tag.node.body.body.length) {
            body = body.concat(tag.node.body.body);
          }
          tag.replaceWithMultiple(body);
        }
      }
    });
  }
};
export {
  migrate_default as default
};