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tests-regexp-2025.js
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if (typeof exports !== "undefined") {
var test = require("./driver.js").test
var testFail = require("./driver.js").testFail
}
// Duplicate named capture groups
test("/(?<x>a)|(?<x>b)/", {}, {ecmaVersion: 2025})
testFail("/(?<x>a)|(?<x>b)/", "Invalid regular expression: /(?<x>a)|(?<x>b)/: Duplicate capture group name (1:1)", {ecmaVersion: 2024 })
testFail("/(?<x>a)(?<x>b)/", "Invalid regular expression: /(?<x>a)(?<x>b)/: Duplicate capture group name (1:1)", {ecmaVersion: 2025})
test("/(?:(?<x>a)|(?<x>b))\\k<x>/", {}, {ecmaVersion: 2025})
testFail("/(?:(?<x>a)|(?<x>b))\\k<x>/", "Invalid regular expression: /(?:(?<x>a)|(?<x>b))\\k<x>/: Duplicate capture group name (1:1)", {ecmaVersion: 2024 })
testFail("/(?:(?<x>a)(?<x>b))\\k<x>/", "Invalid regular expression: /(?:(?<x>a)(?<x>b))\\k<x>/: Duplicate capture group name (1:1)", {ecmaVersion: 2025})
test("/(?<y>a)(?<x>a)|(?<x>b)(?<y>b)/", {}, {ecmaVersion: 2025})
test("/(?<x>a)|(?<x>b)|(?<x>c)/", {}, {ecmaVersion: 2025})
test("/(?<x>a)|\\k<x>/", {}, {ecmaVersion: 2025})
testFail("/(?<x>a)|(?<x>b)(?<x>c)/", "Invalid regular expression: /(?<x>a)|(?<x>b)(?<x>c)/: Duplicate capture group name (1:1)", {ecmaVersion: 2025})
testFail("/(?:(?<x>a)|(?<x>b))(?<x>c)/", "Invalid regular expression: /(?:(?<x>a)|(?<x>b))(?<x>c)/: Duplicate capture group name (1:1)", {ecmaVersion: 2025})
testFail("/(?<x>a)(?:(?<x>b)|(?<x>c))/", "Invalid regular expression: /(?<x>a)(?:(?<x>b)|(?<x>c))/: Duplicate capture group name (1:1)", {ecmaVersion: 2025})
testFail("/(?:(?:(?<x>a)|(?<x>b))|(?:))(?<x>c)/", "Invalid regular expression: /(?:(?:(?<x>a)|(?<x>b))|(?:))(?<x>c)/: Duplicate capture group name (1:1)", {ecmaVersion: 2025})
// Modifiers
test("/(?i-m:p)?/", {}, {ecmaVersion: 2025})
test("/(?i-m:p)?/u", {}, {ecmaVersion: 2025})
test("/(?ims:p)?/", {}, {ecmaVersion: 2025})
test("/(?ims-:p)?/", {}, {ecmaVersion: 2025})
test("/(?-ims:p)?/", {}, {ecmaVersion: 2025})
test("/(?:no modifiers)?/", {}, {ecmaVersion: 2025})
// In ES2024
testFail("/(?i-m:p)?/", "Invalid regular expression: /(?i-m:p)?/: Invalid group (1:1)", {ecmaVersion: 2024})
testFail("/(?ims:p)?/", "Invalid regular expression: /(?ims:p)?/: Invalid group (1:1)", {ecmaVersion: 2024})
testFail("/(?ims-:p)?/", "Invalid regular expression: /(?ims-:p)?/: Invalid group (1:1)", {ecmaVersion: 2024})
testFail("/(?-ims:p)?/", "Invalid regular expression: /(?-ims:p)?/: Invalid group (1:1)", {ecmaVersion: 2024})
// It is a Syntax Error if the first modifiers and the second modifiers are both empty.
testFail("/(?-:p)?/", "Invalid regular expression: /(?-:p)?/: Invalid regular expression modifiers (1:1)", {ecmaVersion: 2025})
// It is a Syntax Error if the first modifiers contains the same code point more than once.
testFail("/(?ii:p)?/", "Invalid regular expression: /(?ii:p)?/: Duplicate regular expression modifiers (1:1)", {ecmaVersion: 2025})
// It is a Syntax Error if the second modifiers contains the same code point more than once.
testFail("/(?-ii:p)?/", "Invalid regular expression: /(?-ii:p)?/: Duplicate regular expression modifiers (1:1)", {ecmaVersion: 2025})
testFail("/(?i-mm:p)?/", "Invalid regular expression: /(?i-mm:p)?/: Duplicate regular expression modifiers (1:1)", {ecmaVersion: 2025})
// It is a Syntax Error if any code point in the first modifiers is also contained in the second modifiers.
testFail("/(?i-i:p)?/", "Invalid regular expression: /(?i-i:p)?/: Duplicate regular expression modifiers (1:1)", {ecmaVersion: 2025})
// Not modifiers
testFail("/(?u:p)?/", "Invalid regular expression: /(?u:p)?/: Invalid group (1:1)", {ecmaVersion: 2025})
testFail("/(?u-:p)?/", "Invalid regular expression: /(?u-:p)?/: Invalid group (1:1)", {ecmaVersion: 2025})
testFail("/(?u-i:p)?/", "Invalid regular expression: /(?u-i:p)?/: Invalid group (1:1)", {ecmaVersion: 2025})
testFail("/(?-u:p)?/", "Invalid regular expression: /(?-u:p)?/: Invalid group (1:1)", {ecmaVersion: 2025})
testFail("/(?i-u:p)?/", "Invalid regular expression: /(?i-u:p)?/: Invalid group (1:1)", {ecmaVersion: 2025})