The restriction on escape sequences in template literals has been loosened. This enables new use cases for template tags, such as writing a LaTeX processor.
{
"category": "JavaScript",
"flag_name": null,
"id": 4588025757564928,
"milestone": 62,
"name": "Loosen up escape sequence restrictions in template literals",
"summary": "The restriction on escape sequences in template literals has been loosened. This enables new use cases for template tags, such as writing a LaTeX processor."
}Lookarounds are zero-width assertions that match a string without consuming anything. ECMAScript has lookahead assertions that does this in forward direction, but the language is missing a way to do this backward which the lookbehind assertions provide. With lookbehind assertions, one can make sure that a pattern is or isn't preceded by another, e.g. matching a dollar amount without capturing the dollar sign.
{
"category": "JavaScript",
"flag_name": null,
"id": 5668726032564224,
"milestone": 62,
"name": "RegExp lookbehind assertions",
"summary": "Lookarounds are zero-width assertions that match a string without consuming anything. ECMAScript has lookahead assertions that does this in forward direction, but the language is missing a way to do this backward which the lookbehind assertions provide. With lookbehind assertions, one can make sure that a pattern is or isn't preceded by another, e.g. matching a dollar amount without capturing the dollar sign."
}The new `s` flag for ECMAScript regular expressions makes `.` match any character, including line terminators.
{
"category": "JavaScript",
"flag_name": null,
"id": 5644209772036096,
"milestone": 62,
"name": "RegExp `dotAll` mode / `s` flag",
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}[
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{
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},
"subject": "Update version to 6.2",
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{
"author": {
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}
]