[Snyk] Upgrade acorn from 5.7.3 to 7.1.0

[snyk-bot]

Snyk has created this PR to upgrade acorn from 5.7.3 to 7.1.0.

Warning: This is a major version upgrade, and may be a breaking change.

• The recommended version is 15 versions ahead of your current version.
• The recommended version was released a month ago, on 2019-09-24.

Release notes

• Package name: acorn
  • 7.1.0 - 2019-09-24

    Bug fixes

    Disallow trailing object literal commas when ecmaVersion is less than 5.

    New features

    Add a static acorn property to the Parser class that contains the entire module interface, to allow plugins to access the instance of the library that they are acting on.

  • 7.0.0 - 2019-08-13

    Breaking changes

    Changes the node format for dynamic imports to use the ImportExpression node type, as defined in ESTree.

    Makes 10 (ES2019) the default value for the ecmaVersion option.

  • 6.3.0 - 2019-08-12

    New features

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  • 6.2.1 - 2019-07-20

    Bug fixes

    Fix bug causing Acorn to treat some characters as identifier characters that shouldn't be treated as such.

    Fix issue where setting the allowReserved option to "never" allowed reserved words in some circumstances.

  • 6.2.0 - 2019-07-04

    Bug fixes

    Improve valid assignment checking in for/in and for/of loops.

    Disallow binding let in patterns.

    New features

    Support bigint syntax with ecmaVersion >= 10.

    Support dynamic import syntax with ecmaVersion >= 10.

    Upgrade to Unicode version 12.

  • 6.1.1 - 2019-02-27

    Bug fixes

    Fix bug that caused parsing default exports of with names to fail.

  • 6.1.0 - 2019-02-08

    Bug fixes

    Fix scope checking when redefining a var as a lexical binding.

    New features

    Split up parseSubscripts to use an internal parseSubscript method to make it easier to extend with plugins.

  • 6.0.7 - 2019-02-04

    Bug fixes

    Check that exported bindings are defined.

    Don't treat \u180e as a whitespace character.

    Check for duplicate parameter names in methods.

    Don't allow shorthand properties when they are generators or async methods.

    Forbid binding await in async arrow function's parameter list.

  • 6.0.6 - 2019-01-30

    Bug fixes

    The content of class declarations and expressions is now always parsed in strict mode.

    Don't allow let or const to bind the variable name let.

    Treat class declarations as lexical.

    Don't allow a generator function declaration as the sole body of an if or else.

    Ignore "use strict" when after an empty statement.

    Allow string line continuations with special line terminator characters.

    Treat for bodies as part of the for scope when checking for conflicting bindings.

    Fix bug with parsing yield in a for loop initializer.

    Implement special cases around scope checking for functions.

  • 6.0.5 - 2019-01-02

    Bug fixes

    Fix TypeScript type for Parser.extend and add allowAwaitOutsideFunction to options type.

    Don't treat let as a keyword when the next token is { on the next line.

    Fix bug that broke checking for parentheses around an object pattern in a destructuring assignment when preserveParens was on.

  • 6.0.4 - 2018-11-05

      </li>
      <li>
        <b>6.0.3</b> - <a href="">2018-11-04</a>
        
      </li>
      <li>
        <b>6.0.2</b> - <a href="">2018-09-26</a>
        
      </li>
      <li>
        <b>6.0.1</b> - <a href="">2018-09-14</a>
        
      </li>
      <li>
        <b>6.0.0</b> - <a href="">2018-09-14</a>
        
      </li>
      <li>
        <b>5.7.3</b> - <a href="">2018-09-10</a>
        
      </li>
    </ul>
    

  from [`acorn` GitHub Release Notes](https://github.com/acornjs/acorn/releases)

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