Port babel-parser changes from 2021-07-02 to 2021-08-14

[alangpierce]

Instructions: https://github.com/alangpierce/sucrase/wiki/Porting-changes-from-Babel's-parser

9bad558d13 [babel 8] Use an identifier for TSTypeParameter.name (#12829)
🚫 AST-only.

bfd2f8f4b1 fix: disallow computed async/get/set keyword (#13531)
🚫 Validation only.

8a3e0fd960 Async do expression should start at async (#13534)
🚫 AST only.

79d3276f61 Overhaul comment attachment (#13521)
🚫 AST only.

6e57617138 Fix await binding error within static block (#13088)
🚫 Only affects validation and babel-parser scopes, which aren't in Sucrase.

2c6db56696 Allow module block to start a member expression (#13573)
🚫 Module blocks aren't supported yet, tracked in #634

dd942f92af fix: parser strictMode option (#13548)
🚫 Option isn't relevant to Sucrase.

22b2f4fc02 Update babel-parser.d.ts (#13575)
🚫 Babel-specific types only.

e591780244 v7.14.8
🚫 Release only.

4a56387330 ts: Check if param is assignable when parsing arrow return type (#13581)
✅ Added test and implemented by re-parsing as a non-arrow-function if we get an error. Fixes #631. Fixes #666.

e4de256cdd chore: reorganize benchmarks (#13606)
🚫 Code not relevant to Sucrase.

d3a7cd5e8d Replace generic __clone call by specific methods (#13611)
🚫 Only affects ASTs.

aa2cac5edc v7.14.9
🚫 Release only.

b3ab4769d0 fix(ts): raise error for export default interface {} (#13622)
🚫 Validation only.

a254ea38a4 Enable ergonomic brand checks (#priv in) by default (#13554)
🚫 Already works by default in Sucrase.

6276853eb9 Add support for the "Hack" pipeline proposal (#13191)
🚫 Already works with Sucrase. This babel-parser change updates error handling (not relevant for Sucrase) and switches the default topic reference token to %, but more recent discussions have decided against that one.

cd4b3fbffe parser: Fix Hack/smart-pipe error positions (#13426)
🚫 AST only.

35e4e1f067 Hack-pipe proposal with % topic token (#13416)
🚫 Changes are only to AST, error handling, and % topic reference token support.

ff287ac5a5 Fix %== parsing in hack pipes (#13536)
🚫 Only affects outdated % topic reference tokens.

c35637e247 feat(ts): raise error for abstract property with initializer (#13523)
🚫 Validation only.

ddaf0d4296 Enable top-level await parsing by default (#13387)
🚫 Already enabled by default in Sucrase.

d5b0d9e33d Add attachComment parser option to disable comment attachment (#13229)
🚫 Not relevant to Sucrase.

0671afcf87 [ts] support optional chain call with generic (#13513)
🚫 Already works and has tests.

6912f968a6 v7.15.0
🚫 Release only.

f9dcc4e4bb Fix array destructuring elision parsing in TS arrow functions (#13641)
🚫 Regression that wasn't introduced in Sucrase.

e294beb3ac Add .errors to the @babel/parser return type definitions (#13653)
🚫 Type definitions only.

084870faad v7.15.2
🚫 Release only.

8a09993e39 fix(parser): add attachComment to ParserOptions type (#13657)
🚫 Type definitions only.

da1d166ea6 perf: minor tokenizer tweaks (#13652)
🚫 Optimizations not relevant to Sucrase.

9d0aa1ec9d Disallow <T>(a => b) when parsing Flow (#13645)
🚫 Validation only.

e721f61110 [flow] Fix parsing of arrows in conditional exprs in parens (#13655)
✅ Seems to be fixed by above fix. I added a regression test.

1229336fea Fix parse error when using named import "as" with flow parser (#13659)
✅ Added test and ported fix in fairly direct way.

9286cdb072 Re-enable disabled flow parser test (#13661)
🚫 Test only.

a5624ea457 v7.15.3
🚫 Test only.

10640b2aad perf: partially replace .concat with .push (#13609)
🚫 Sucrase doesn't use .concat.

[codecov]

Codecov Report

Merging #673 (3691bda) into main (c6cfacc) will increase coverage by 0.01%.
The diff coverage is 85.71%.

❗ Current head 3691bda differs from pull request most recent head cf849ab. Consider uploading reports for the commit cf849ab to get more accurate results

@@            Coverage Diff             @@
##             main     #673      +/-   ##
==========================================
+ Coverage   84.72%   84.73%   +0.01%     
==========================================
  Files          54       54              
  Lines        5767     5771       +4     
  Branches     1313     1314       +1     
==========================================
+ Hits         4886     4890       +4     
  Misses        597      597              
  Partials      284      284              

Impacted Files	Coverage Δ
src/parser/plugins/flow.ts	63.92% <50.00%> (ø)
src/parser/plugins/typescript.ts	85.29% <100.00%> (ø)
src/parser/traverser/expression.ts	88.43% <100.00%> (+0.09%)	⬆️

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[github-actions]

Benchmark results

Before this PR: 282.3 thousand lines per second
After this PR: 283.7 thousand lines per second

Measured change: 0.52% faster (0.61% slower to 0.74% faster)
Summary: Likely no significant difference