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diff --git a/lib/rules/no-useless-escape.js b/lib/rules/no-useless-escape.js
index 2046a148a17fd1d5f3a4bbc9f45f7700259d11fa..f4898c6b57355a4fd72c43a9f32bf1a36a6ccf4a 100644
--- a/lib/rules/no-useless-escape.js
+++ b/lib/rules/no-useless-escape.js
@@ -97,12 +97,30 @@ module.exports = {
escapeBackslash: "Replace the `\\` with `\\\\` to include the actual backslash character."
},
- schema: []
+ schema: [{
+ type: "object",
+ properties: {
+ extra: {
+ type: "string",
+ default: ""
+ },
+ extraCharClass: {
+ type: "string",
+ default: ""
+ },
+ },
+ additionalProperties: false
+ }]
},
create(context) {
+ const options = context.options[0] || {};
+ const { extra, extraCharClass } = options || ''
const sourceCode = context.getSourceCode();
+ const NON_CHARCLASS_ESCAPES = union(REGEX_NON_CHARCLASS_ESCAPES, new Set(extra))
+ const CHARCLASS_ESCAPES = union(REGEX_GENERAL_ESCAPES, new Set(extraCharClass))
+
/**
* Reports a node
* @param {ASTNode} node The node to report
@@ -238,7 +256,7 @@ module.exports = {
.filter(charInfo => charInfo.escaped)
// Filter out characters that are valid to escape, based on their position in the regular expression.
- .filter(charInfo => !(charInfo.inCharClass ? REGEX_GENERAL_ESCAPES : REGEX_NON_CHARCLASS_ESCAPES).has(charInfo.text))
+ .filter(charInfo => !(charInfo.inCharClass ? CHARCLASS_ESCAPES : NON_CHARCLASS_ESCAPES).has(charInfo.text))
// Report all the remaining characters.
.forEach(charInfo => report(node, charInfo.index, charInfo.text));