index.js 2.2 KB

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  1. "use strict";
  2. Object.defineProperty(exports, "__esModule", {
  3. value: true
  4. });
  5. exports.needsParens = needsParens;
  6. exports.needsWhitespace = needsWhitespace;
  7. exports.needsWhitespaceAfter = needsWhitespaceAfter;
  8. exports.needsWhitespaceBefore = needsWhitespaceBefore;
  9. var whitespace = require("./whitespace.js");
  10. var parens = require("./parentheses.js");
  11. var _t = require("@babel/types");
  12. const {
  13. FLIPPED_ALIAS_KEYS,
  14. isCallExpression,
  15. isExpressionStatement,
  16. isMemberExpression,
  17. isNewExpression
  18. } = _t;
  19. function expandAliases(obj) {
  20. const map = new Map();
  21. function add(type, func) {
  22. const fn = map.get(type);
  23. map.set(type, fn ? function (node, parent, stack) {
  24. var _fn;
  25. return (_fn = fn(node, parent, stack)) != null ? _fn : func(node, parent, stack);
  26. } : func);
  27. }
  28. for (const type of Object.keys(obj)) {
  29. const aliases = FLIPPED_ALIAS_KEYS[type];
  30. if (aliases) {
  31. for (const alias of aliases) {
  32. add(alias, obj[type]);
  33. }
  34. } else {
  35. add(type, obj[type]);
  36. }
  37. }
  38. return map;
  39. }
  40. const expandedParens = expandAliases(parens);
  41. const expandedWhitespaceNodes = expandAliases(whitespace.nodes);
  42. function isOrHasCallExpression(node) {
  43. if (isCallExpression(node)) {
  44. return true;
  45. }
  46. return isMemberExpression(node) && isOrHasCallExpression(node.object);
  47. }
  48. function needsWhitespace(node, parent, type) {
  49. var _expandedWhitespaceNo;
  50. if (!node) return false;
  51. if (isExpressionStatement(node)) {
  52. node = node.expression;
  53. }
  54. const flag = (_expandedWhitespaceNo = expandedWhitespaceNodes.get(node.type)) == null ? void 0 : _expandedWhitespaceNo(node, parent);
  55. if (typeof flag === "number") {
  56. return (flag & type) !== 0;
  57. }
  58. return false;
  59. }
  60. function needsWhitespaceBefore(node, parent) {
  61. return needsWhitespace(node, parent, 1);
  62. }
  63. function needsWhitespaceAfter(node, parent) {
  64. return needsWhitespace(node, parent, 2);
  65. }
  66. function needsParens(node, parent, printStack) {
  67. var _expandedParens$get;
  68. if (!parent) return false;
  69. if (isNewExpression(parent) && parent.callee === node) {
  70. if (isOrHasCallExpression(node)) return true;
  71. }
  72. return (_expandedParens$get = expandedParens.get(node.type)) == null ? void 0 : _expandedParens$get(node, parent, printStack);
  73. }
  74. //# sourceMappingURL=index.js.map