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author | Michaël Zasso <targos@protonmail.com> | 2017-12-22 16:53:42 +0100 |
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committer | Michaël Zasso <targos@protonmail.com> | 2018-01-11 09:48:05 +0100 |
commit | 3dc30632755713179f345f4af024bd904c6162d0 (patch) | |
tree | f28c4f6dd6dfc5992edf301449d1a371d229755b /tools/node_modules/eslint/lib/rules/no-invalid-regexp.js | |
parent | a2c7085dd4a8e60d1a47572aca8bb6fcb7a32f88 (diff) | |
download | node-new-3dc30632755713179f345f4af024bd904c6162d0.tar.gz |
tools: move eslint from tools to tools/node_modules
This is required because we need to add the babel-eslint dependency
and it has to be able to resolve "eslint".
babel-eslint is required to support future ES features such as async
iterators and import.meta.
Refs: https://github.com/nodejs/node/pull/17755
PR-URL: https://github.com/nodejs/node/pull/17820
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Diffstat (limited to 'tools/node_modules/eslint/lib/rules/no-invalid-regexp.js')
-rw-r--r-- | tools/node_modules/eslint/lib/rules/no-invalid-regexp.js | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/tools/node_modules/eslint/lib/rules/no-invalid-regexp.js b/tools/node_modules/eslint/lib/rules/no-invalid-regexp.js new file mode 100644 index 0000000000..45596f7ee8 --- /dev/null +++ b/tools/node_modules/eslint/lib/rules/no-invalid-regexp.js @@ -0,0 +1,106 @@ +/** + * @fileoverview Validate strings passed to the RegExp constructor + * @author Michael Ficarra + */ +"use strict"; + +//------------------------------------------------------------------------------ +// Requirements +//------------------------------------------------------------------------------ + +const espree = require("espree"); + +//------------------------------------------------------------------------------ +// Rule Definition +//------------------------------------------------------------------------------ + +module.exports = { + meta: { + docs: { + description: "disallow invalid regular expression strings in `RegExp` constructors", + category: "Possible Errors", + recommended: true + }, + + schema: [{ + type: "object", + properties: { + allowConstructorFlags: { + type: "array", + items: { + type: "string" + } + } + }, + additionalProperties: false + }] + }, + + create(context) { + + const options = context.options[0]; + let allowedFlags = ""; + + if (options && options.allowConstructorFlags) { + allowedFlags = options.allowConstructorFlags.join(""); + } + + /** + * Check if node is a string + * @param {ASTNode} node node to evaluate + * @returns {boolean} True if its a string + * @private + */ + function isString(node) { + return node && node.type === "Literal" && typeof node.value === "string"; + } + + /** + * Validate strings passed to the RegExp constructor + * @param {ASTNode} node node to evaluate + * @returns {void} + * @private + */ + function check(node) { + if (node.callee.type === "Identifier" && node.callee.name === "RegExp" && isString(node.arguments[0])) { + let flags = isString(node.arguments[1]) ? node.arguments[1].value : ""; + + if (allowedFlags) { + flags = flags.replace(new RegExp(`[${allowedFlags}]`, "gi"), ""); + } + + try { + void new RegExp(node.arguments[0].value); + } catch (e) { + context.report({ + node, + message: "{{message}}.", + data: e + }); + } + + if (flags) { + + try { + espree.parse(`/./${flags}`, context.parserOptions); + } catch (ex) { + context.report({ + node, + message: "Invalid flags supplied to RegExp constructor '{{flags}}'.", + data: { + flags + } + }); + } + } + + } + } + + return { + CallExpression: check, + NewExpression: check + }; + + } +}; |