no-mutable-exports.js 5.7 KB

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  1. 'use strict';var _docsUrl = require('../docsUrl');var _docsUrl2 = _interopRequireDefault(_docsUrl);function _interopRequireDefault(obj) {return obj && obj.__esModule ? obj : { default: obj };}
  2. module.exports = {
  3. meta: {
  4. type: 'suggestion',
  5. docs: {
  6. url: (0, _docsUrl2.default)('no-mutable-exports') },
  7. schema: [] },
  8. create: function (context) {
  9. function checkDeclaration(node) {const
  10. kind = node.kind;
  11. if (kind === 'var' || kind === 'let') {
  12. context.report(node, `Exporting mutable '${kind}' binding, use 'const' instead.`);
  13. }
  14. }
  15. function checkDeclarationsInScope(_ref, name) {let variables = _ref.variables;
  16. for (const variable of variables) {
  17. if (variable.name === name) {
  18. for (const def of variable.defs) {
  19. if (def.type === 'Variable' && def.parent) {
  20. checkDeclaration(def.parent);
  21. }
  22. }
  23. }
  24. }
  25. }
  26. function handleExportDefault(node) {
  27. const scope = context.getScope();
  28. if (node.declaration.name) {
  29. checkDeclarationsInScope(scope, node.declaration.name);
  30. }
  31. }
  32. function handleExportNamed(node) {
  33. const scope = context.getScope();
  34. if (node.declaration) {
  35. checkDeclaration(node.declaration);
  36. } else if (!node.source) {
  37. for (const specifier of node.specifiers) {
  38. checkDeclarationsInScope(scope, specifier.local.name);
  39. }
  40. }
  41. }
  42. return {
  43. 'ExportDefaultDeclaration': handleExportDefault,
  44. 'ExportNamedDeclaration': handleExportNamed };
  45. } };
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