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wip: compiler should default to v3 behavior

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This commit is contained in:
Evan You
2021-04-17 15:55:14 -04:00
parent 3528ced0b4
commit c5c304af14
3 changed files with 13 additions and 5 deletions
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15
packages/compiler-core/src/compat/compatConfig.ts
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@@ -96,13 +96,18 @@ const deprecationData: Record<CompilerDeprecationTypes, DeprecationData> = {
}
function getCompatValue(
key: CompilerDeprecationTypes,
key: CompilerDeprecationTypes | 'MODE',
context: ParserContext | TransformContext
) {
const config = (context as ParserContext).options
? (context as ParserContext).options.compatConfig
: (context as TransformContext).compatConfig
return config && config[key]
const value = config && config[key]
if (key === 'MODE') {
return value || 3 // compiler defaults to v3 behavior
} else {
return value
}
}
export function checkCompatEnabled(
@@ -111,9 +116,11 @@ export function checkCompatEnabled(
loc: SourceLocation | null,
...args: any[]
): boolean {
const mode = getCompatValue('MODE', context)
const value = getCompatValue(key, context)
// during tests, only enable when value is explicitly true
const enabled = __TEST__ ? value === true : value !== false
// in v3 mode, only enable if explicitly set to true
// otherwise enable for any non-false value
const enabled = mode === 3 ? value === true : value !== false
if (__DEV__ && enabled) {
warnDeprecation(key, context, loc, ...args)
}