evanw/esbuild
evanw/esbuild
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Published 3/3/2023
PatchSafe upgradeFix the alias feature to always prefer the longest match (#2963)
It's possible to configure conflicting aliases such as --alias:a=b and --alias:a/c=d, which is ambiguous for the import path a/c/x (since it could map to either b/c/x or d/x). Previously esbuild would pick the first matching alias, which would non-deterministically pick between one of the possible matches. This release fixes esbuild to always deterministically pick the longest possible match.
Minify calls to some global primitive constructors (#2962)
With this release, esbuild's minifier now replaces calls to Boolean/Number/String/BigInt with equivalent shorter code when relevant:
// Original code
console.log(
Boolean(a ? (b | c) !== 0 : (c & d) !== 0),
Number(e ? '1' : '2'),
String(e ? '1' : '2'),
BigInt(e ? 1n : 2n),
)
// Old output (with --minify)
console.log(Boolean(a?(b|c)!==0:(c&d)!==0),Number(e?"1":"2"),String(e?"1":"2"),BigInt(e?1n:2n));
// New output (with --minify)
console.log(!!(a?b|c:c&d),+(e?"1":"2"),e?"1":"2",e?1n:2n);
Adjust some feature compatibility tables for node (#2940)
This release makes the following adjustments to esbuild's internal feature compatibility tables for node, which tell esbuild which versions of node are known to support all aspects of that feature:
class-private-brand-checks: node v16.9+ => node v16.4+ (a decrease)hashbang: node v12.0+ => node v12.5+ (an increase)optional-chain: node v16.9+ => node v16.1+ (a decrease)template-literal: node v4+ => node v10+ (an increase)Each of these adjustments was identified by comparing against data from the node-compat-table package and was manually verified using old node executables downloaded from https://nodejs.org/download/release/.
release notes
Published 3/3/2023
PatchSafe upgradeFix the alias feature to always prefer the longest match (#2963)
It's possible to configure conflicting aliases such as --alias:a=b and --alias:a/c=d, which is ambiguous for the import path a/c/x (since it could map to either b/c/x or d/x). Previously esbuild would pick the first matching alias, which would non-deterministically pick between one of the possible matches. This release fixes esbuild to always deterministically pick the longest possible match.
Minify calls to some global primitive constructors (#2962)
With this release, esbuild's minifier now replaces calls to Boolean/Number/String/BigInt with equivalent shorter code when relevant:
// Original code
console.log(
Boolean(a ? (b | c) !== 0 : (c & d) !== 0),
Number(e ? '1' : '2'),
String(e ? '1' : '2'),
BigInt(e ? 1n : 2n),
)
// Old output (with --minify)
console.log(Boolean(a?(b|c)!==0:(c&d)!==0),Number(e?"1":"2"),String(e?"1":"2"),BigInt(e?1n:2n));
// New output (with --minify)
console.log(!!(a?b|c:c&d),+(e?"1":"2"),e?"1":"2",e?1n:2n);
Adjust some feature compatibility tables for node (#2940)
This release makes the following adjustments to esbuild's internal feature compatibility tables for node, which tell esbuild which versions of node are known to support all aspects of that feature:
class-private-brand-checks: node v16.9+ => node v16.4+ (a decrease)hashbang: node v12.0+ => node v12.5+ (an increase)optional-chain: node v16.9+ => node v16.1+ (a decrease)template-literal: node v4+ => node v10+ (an increase)Each of these adjustments was identified by comparing against data from the node-compat-table package and was manually verified using old node executables downloaded from https://nodejs.org/download/release/.
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