Bump esbuild from 0.14.47 to 0.16.11

[dependabot[bot]]

Bumps esbuild from 0.14.47 to 0.16.11.

Release notes

Sourced from esbuild's releases.

v0.16.11

• Avoid a syntax error in the presence of direct eval (#2761)

  The behavior of nested function declarations in JavaScript depends on whether the code is run in strict mode or not. It would be problematic if esbuild preserved nested function declarations in its output because then the behavior would depend on whether the output was run in strict mode or not instead of respecting the strict mode behavior of the original source code. To avoid this, esbuild transforms nested function declarations to preserve the intended behavior of the original source code regardless of whether the output is run in strict mode or not:

  // Original code
  if (true) {
    function foo() {}
    console.log(!!foo)
    foo = null
    console.log(!!foo)
  }
  console.log(!!foo)
  // Transformed code
  if (true) {
  let foo2 = function() {
  };
  var foo = foo2;
  console.log(!!foo2);
  foo2 = null;
  console.log(!!foo2);
  }
  console.log(!!foo);
  

  In the above example, the original code should print true false true because it's not run in strict mode (it doesn't contain "use strict" and is not an ES module). The code that esbuild generates has been transformed such that it prints true false true regardless of whether it's run in strict mode or not.

  However, this transformation is impossible if the code contains direct eval because direct eval "poisons" all containing scopes by preventing anything in those scopes from being renamed. That prevents esbuild from splitting up accesses to foo into two separate variables with different names. Previously esbuild still did this transformation but with two variables both named foo, which is a syntax error. With this release esbuild will now skip doing this transformation when direct eval is present to avoid generating code with a syntax error. This means that the generated code may no longer behave as intended since the behavior depends on the run-time strict mode setting instead of the strict mode setting present in the original source code. To fix this problem, you will need to remove the use of direct eval.

• Fix a bundling scenario involving multiple symlinks (#2773, #2774)

  This release contains a fix for a bundling scenario involving an import path where multiple path segments are symlinks. Previously esbuild was unable to resolve certain import paths in this scenario, but these import paths should now work starting with this release. This fix was contributed by @​onebytegone.

v0.16.10

• Change the default "legal comment" behavior again (#2745)

  The legal comments feature automatically gathers comments containing @license or @preserve and puts the comments somewhere (either in the generated code or in a separate file). This behavior used to be on by default but was disabled by default in version 0.16.0 because automatically inserting comments is potentially confusing and misleading. These comments can appear to be assigning the copyright of your code to another entity. And this behavior can be especially problematic if it happens automatically by default since you may not even be aware of it happening. For example, if you bundle the TypeScript compiler the preserving legal comments means your source code would contain this comment, which appears to be assigning the copyright of all of your code to Microsoft:

  /*! *****************************************************************************
  Copyright (c) Microsoft Corporation. All rights reserved.
  Licensed under the Apache License, Version 2.0 (the "License"); you may not use
  this file except in compliance with the License. You may obtain a copy of the
  License at http://www.apache.org/licenses/LICENSE-2.0
  THIS CODE IS PROVIDED ON AN AS IS BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED
  WARRANTIES OR CONDITIONS OF TITLE, FITNESS FOR A PARTICULAR PURPOSE,
  

... (truncated)

Changelog

Sourced from esbuild's changelog.

0.16.11

• Avoid a syntax error in the presence of direct eval (#2761)

  The behavior of nested function declarations in JavaScript depends on whether the code is run in strict mode or not. It would be problematic if esbuild preserved nested function declarations in its output because then the behavior would depend on whether the output was run in strict mode or not instead of respecting the strict mode behavior of the original source code. To avoid this, esbuild transforms nested function declarations to preserve the intended behavior of the original source code regardless of whether the output is run in strict mode or not:

  // Original code
  if (true) {
    function foo() {}
    console.log(!!foo)
    foo = null
    console.log(!!foo)
  }
  console.log(!!foo)
  // Transformed code
  if (true) {
  let foo2 = function() {
  };
  var foo = foo2;
  console.log(!!foo2);
  foo2 = null;
  console.log(!!foo2);
  }
  console.log(!!foo);
  

  In the above example, the original code should print true false true because it's not run in strict mode (it doesn't contain "use strict" and is not an ES module). The code that esbuild generates has been transformed such that it prints true false true regardless of whether it's run in strict mode or not.

  However, this transformation is impossible if the code contains direct eval because direct eval "poisons" all containing scopes by preventing anything in those scopes from being renamed. That prevents esbuild from splitting up accesses to foo into two separate variables with different names. Previously esbuild still did this transformation but with two variables both named foo, which is a syntax error. With this release esbuild will now skip doing this transformation when direct eval is present to avoid generating code with a syntax error. This means that the generated code may no longer behave as intended since the behavior depends on the run-time strict mode setting instead of the strict mode setting present in the original source code. To fix this problem, you will need to remove the use of direct eval.

• Fix a bundling scenario involving multiple symlinks (#2773, #2774)

  This release contains a fix for a bundling scenario involving an import path where multiple path segments are symlinks. Previously esbuild was unable to resolve certain import paths in this scenario, but these import paths should now work starting with this release. This fix was contributed by @​onebytegone.

0.16.10

• Change the default "legal comment" behavior again (#2745)

  The legal comments feature automatically gathers comments containing @license or @preserve and puts the comments somewhere (either in the generated code or in a separate file). This behavior used to be on by default but was disabled by default in version 0.16.0 because automatically inserting comments is potentially confusing and misleading. These comments can appear to be assigning the copyright of your code to another entity. And this behavior can be especially problematic if it happens automatically by default since you may not even be aware of it happening. For example, if you bundle the TypeScript compiler the preserving legal comments means your source code would contain this comment, which appears to be assigning the copyright of all of your code to Microsoft:

  /*! *****************************************************************************
  Copyright (c) Microsoft Corporation. All rights reserved.
  Licensed under the Apache License, Version 2.0 (the "License"); you may not use
  this file except in compliance with the License. You may obtain a copy of the
  License at http://www.apache.org/licenses/LICENSE-2.0
  THIS CODE IS PROVIDED ON AN AS IS BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  

... (truncated)

Commits

• 1755592 publish 0.16.11 to npm
• ba6246a fix #2773: eval dependency symlinks instead of reading symlink target (#2774)
• cf8ea74 Fix typo in js_parser_lower.go (#2771)
• 0a60afe additional test coverage
• 46347f7 fix #2761: avoid syntax error with direct eval
• c94ad6c explicit pre-release version error (#2766, #2760)
• 0fea6ae publish 0.16.10 to npm
• 270a210 fix #2715: allow package subpaths with alias
• 1ec8085 fix #2390: transform w/ external legal comments
• 6a73c5e fix #2757: duplicate function definition edge case
• Additional commits viewable in compare view

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[sonarcloud[bot]]

Kudos, SonarCloud Quality Gate passed!   

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[codecov[bot]]

Codecov Report

Merging #1184 (229f540) into master (1d2e60f) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1184   +/-   ##
=======================================
  Coverage   50.74%   50.74%           
=======================================
  Files          23       23           
  Lines         668      668           
  Branches       85       85           
=======================================
  Hits          339      339           
  Misses        257      257           
  Partials       72       72           

Flag	Coverage Δ
unittests	50.74% <ø> (ø)

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[dependabot[bot]]

Superseded by #1186.