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Bump terser from 4.6.3 to 4.8.1 in /website

Merged Administrator requested to merge dependabot/npm_and_yarn/website/terser-4.8.1 into master

Created by: dependabot[bot]

Bumps terser from 4.6.3 to 4.8.1.

Changelog

Sourced from terser's changelog.

v4.8.1 (backport)

  • Security fix for RegExps that should not be evaluated (regexp DDOS)

v4.8.0

  • Support for numeric separators (million = 1_000_000) was added.
  • Assigning properties to a class is now assumed to be pure.
  • Fixed bug where yield wasn't considered a valid property key in generators.

v4.7.0

  • A bug was fixed where an arrow function would have the wrong size
  • arguments object is now considered safe to retrieve properties from (useful for length, or 0) even when pure_getters is not set.
  • Fixed erroneous const declarations without value (which is invalid) in some corner cases when using collapse_vars.

v4.6.13

  • Fixed issue where ES5 object properties were being turned into ES6 object properties due to more lax unicode rules.
  • Fixed parsing of BigInt with lowercase e in them.

v4.6.12

  • Fixed subtree comparison code, making it see that [1,[2, 3]] is different from [1, 2, [3]]
  • Printing of unicode identifiers has been improved

v4.6.11

  • Read unused classes' properties and method keys, to figure out if they use other variables.
  • Prevent inlining into block scopes when there are name collisions
  • Functions are no longer inlined into parameter defaults, because they live in their own special scope.
  • When inlining identity functions, take into account the fact they may be used to drop this in function calls.
  • Nullish coalescing operator (x ?? y), plus basic optimization for it.
  • Template literals in binary expressions such as + have been further optimized

v4.6.10

  • Do not use reduce_vars when classes are present

v4.6.9

  • Check if block scopes actually exist in blocks

v4.6.8

  • Take into account "executed bits" of classes like static properties or computed keys, when checking if a class evaluation might throw or have side effects.

v4.6.7

  • Some new performance gains through a AST_Node.size() method which measures a node's source code length without printing it to a string first.

... (truncated)

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