48 lines
1.2 KiB
JavaScript
48 lines
1.2 KiB
JavaScript
import chalk from 'chalk'
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import log from './util/log'
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const featureFlags = {
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future: [],
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experimental: ['optimizeUniversalDefaults'],
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}
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export function flagEnabled(config, flag) {
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if (featureFlags.future.includes(flag)) {
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return config.future === 'all' || (config?.future?.[flag] ?? false)
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}
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if (featureFlags.experimental.includes(flag)) {
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return config.experimental === 'all' || (config?.experimental?.[flag] ?? false)
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}
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return false
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}
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function experimentalFlagsEnabled(config) {
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if (config.experimental === 'all') {
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return featureFlags.experimental
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}
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return Object.keys(config?.experimental ?? {}).filter(
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(flag) => featureFlags.experimental.includes(flag) && config.experimental[flag]
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)
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}
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export function issueFlagNotices(config) {
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if (process.env.JEST_WORKER_ID !== undefined) {
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return
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}
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if (experimentalFlagsEnabled(config).length > 0) {
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const changes = experimentalFlagsEnabled(config)
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.map((s) => chalk.yellow(s))
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.join(', ')
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log.warn('experimental-flags-enabled', [
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`You have enabled experimental features: ${changes}`,
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'Experimental features are not covered by semver, may introduce breaking changes, and can change at any time.',
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])
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}
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}
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export default featureFlags
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