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Commitc7fa1cf

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fix: always transpile syntaxes introduced in ES2020 or later
To fix compatibility issues with webpack 4 and ESLint 6.Browserslist doesn't support ES version queries, so we approximate itas Chrome 79.0.0 and Node.js 12Fixes#7209
1 parent5b57792 commitc7fa1cf

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‎packages/@vue/babel-preset-app/index.js

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@@ -176,9 +176,21 @@ module.exports = (context, options = {}) => {
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// resolve targets for preset-env
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lettargets=getTargets(rawTargets,{ ignoreBrowserslistConfig, configPath})
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// Webpack 4 uses acorn 6 underlyingly;
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// The highest ESLint version that Vue CLI v4 supports is 6.x;
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// Both can only parse ES2019 syntax + BigInt at most.
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// Thus, newer syntaxes such as optional chaining and nullish coalescing won't
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// be accept by webpack / ESLint, and must be processed by Babel first.
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// Chrome 79 is the last Chrome version that doesn't support these syntaxes.
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// So the targets set by the user cannot be higher than Chrome 79.
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if(!targets.chrome||semver.gt(targets.chrome,'79.0.0')){
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targets.chrome='79.0.0'
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}
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if(process.env.VUE_CLI_BABEL_TARGET_NODE){
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// running tests in Node.js
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targets={node:'current'}
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targets={node:'12'}
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}elseif(process.env.VUE_CLI_BUILD_TARGET==='wc'||process.env.VUE_CLI_BUILD_TARGET==='wc-async'){
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// targeting browsers that at least support ES2015 classes
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targets=getWCTargets(targets)

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