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| module.exports = {
| presets: ["@vue/cli-plugin-babel/preset"],
| plugins: ["@babel/plugin-proposal-optional-chaining"],
| compact: false,
| plugins:[
| // null判断运算符支持 ??
| // '@babel/plugin-proposal-nullish-coalescing-operator',
| // 链判断运算符支持 ?.
| '@babel/plugin-proposal-optional-chaining'
| ]
| };
|
|
