TSNonNullExpression.js 3.1 KB

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  1. 'use strict';
  2. Object.defineProperty(exports, "__esModule", {
  3. value: true
  4. });
  5. exports.default = extractValueFromTSNonNullExpression;
  6. var extractValueFromThisExpression = require('./ThisExpression').default;
  7. function navigate(obj, prop, value) {
  8. if (value.computed) {
  9. return value.optional ? obj + '?.[' + prop + ']' : obj + '[' + prop + ']';
  10. }
  11. return value.optional ? obj + '?.' + prop : obj + '.' + prop;
  12. }
  13. /**
  14. * Extractor function for a TSNonNullExpression type value node.
  15. * A TSNonNullExpression is accessing a TypeScript Non-Null Assertion
  16. * Operator !
  17. *
  18. * @param - value - AST Value object with type `TSNonNullExpression`
  19. * @returns - The extracted value converted to correct type
  20. * and maintaing `obj.property` convention.
  21. */
  22. function extractValueFromTSNonNullExpression(value) {
  23. // eslint-disable-next-line global-require
  24. // const getValue = require('.').default;
  25. var errorMessage = 'The prop value with an expression type of TSNonNullExpression could not be resolved. Please file an issue ( https://github.com/jsx-eslint/jsx-ast-utils/issues/new ) to get this fixed immediately.';
  26. // it's just the name
  27. if (value.type === 'Identifier') {
  28. var name = value.name;
  29. return name;
  30. }
  31. if (value.type === 'Literal') {
  32. return value.value;
  33. }
  34. if (value.type === 'TSAsExpression') {
  35. return extractValueFromTSNonNullExpression(value.expression);
  36. }
  37. if (value.type === 'ThisExpression') {
  38. return extractValueFromThisExpression();
  39. }
  40. // does not contains properties & is not parenthesized
  41. if (value.type === 'TSNonNullExpression' && (!value.extra || value.extra.parenthesized === false)) {
  42. var expression = value.expression;
  43. return extractValueFromTSNonNullExpression(expression) + '!';
  44. }
  45. // does not contains properties & is parenthesized
  46. if (value.type === 'TSNonNullExpression' && value.extra && value.extra.parenthesized === true) {
  47. var _expression = value.expression;
  48. return '(' + extractValueFromTSNonNullExpression(_expression) + '!' + ')';
  49. }
  50. if (value.type === 'MemberExpression') {
  51. // contains a property & is not parenthesized
  52. if (!value.extra || value.extra.parenthesized === false) {
  53. return navigate(extractValueFromTSNonNullExpression(value.object), extractValueFromTSNonNullExpression(value.property), value);
  54. }
  55. // contains a property & is parenthesized
  56. if (value.extra && value.extra.parenthesized === true) {
  57. var result = navigate(extractValueFromTSNonNullExpression(value.object), extractValueFromTSNonNullExpression(value.property), value);
  58. return '(' + result + ')';
  59. }
  60. }
  61. // try to fail silently, if specs for TSNonNullExpression change
  62. // not throw, only log error. Similar to how it was done previously
  63. if (value.expression) {
  64. var _expression2 = value.expression;
  65. while (_expression2) {
  66. if (_expression2.type === 'Identifier') {
  67. // eslint-disable-next-line no-console
  68. console.error(errorMessage);
  69. return _expression2.name;
  70. }
  71. var _expression3 = _expression2;
  72. _expression2 = _expression3.expression;
  73. }
  74. }
  75. // eslint-disable-next-line no-console
  76. console.error(errorMessage);
  77. return '';
  78. }