no-buffer-constructor.js 1.8 KB

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  1. /**
  2. * @fileoverview disallow use of the Buffer() constructor
  3. * @author Teddy Katz
  4. * @deprecated in ESLint v7.0.0
  5. */
  6. "use strict";
  7. //------------------------------------------------------------------------------
  8. // Rule Definition
  9. //------------------------------------------------------------------------------
  10. /** @type {import('../types').Rule.RuleModule} */
  11. module.exports = {
  12. meta: {
  13. deprecated: {
  14. message: "Node.js rules were moved out of ESLint core.",
  15. url: "https://eslint.org/docs/latest/use/migrating-to-7.0.0#deprecate-node-rules",
  16. deprecatedSince: "7.0.0",
  17. availableUntil: "11.0.0",
  18. replacedBy: [
  19. {
  20. message:
  21. "eslint-plugin-n now maintains deprecated Node.js-related rules.",
  22. plugin: {
  23. name: "eslint-plugin-n",
  24. url: "https://github.com/eslint-community/eslint-plugin-n",
  25. },
  26. rule: {
  27. name: "no-deprecated-api",
  28. url: "https://github.com/eslint-community/eslint-plugin-n/tree/master/docs/rules/no-deprecated-api.md",
  29. },
  30. },
  31. ],
  32. },
  33. type: "problem",
  34. docs: {
  35. description: "Disallow use of the `Buffer()` constructor",
  36. recommended: false,
  37. url: "https://eslint.org/docs/latest/rules/no-buffer-constructor",
  38. },
  39. schema: [],
  40. messages: {
  41. deprecated:
  42. "{{expr}} is deprecated. Use Buffer.from(), Buffer.alloc(), or Buffer.allocUnsafe() instead.",
  43. },
  44. },
  45. create(context) {
  46. //----------------------------------------------------------------------
  47. // Public
  48. //----------------------------------------------------------------------
  49. return {
  50. "CallExpression[callee.name='Buffer'], NewExpression[callee.name='Buffer']"(
  51. node,
  52. ) {
  53. context.report({
  54. node,
  55. messageId: "deprecated",
  56. data: {
  57. expr:
  58. node.type === "CallExpression"
  59. ? "Buffer()"
  60. : "new Buffer()",
  61. },
  62. });
  63. },
  64. };
  65. },
  66. };