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Support 'all' keyword for feature flags

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This commit is contained in:
Adam Wathan 2020-08-06 16:26:15 -04:00
parent cafbc65b3b
commit 80ad8a4c8f
1 changed files with 42 additions and 14 deletions
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56
src/featureFlags.js
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@ -8,34 +8,62 @@ const featureFlags = {
export function flagEnabled(config, flag) {
if (featureFlags.future.includes(flag)) {
return _.get(config, ['future', flag], false)
return config.future === 'all' || _.get(config, ['future', flag], false)
}
if (featureFlags.experimental.includes(flag)) {
return _.get(config, ['experimental', flag], false)
return config.experimental === 'all' || _.get(config, ['experimental', flag], false)
}
return false
}
function futureFlagsEnabled(config) {
if (config.future === 'all') {
return featureFlags.future
}
return Object.keys(_.get(config, 'future', {})).filter(
flag => featureFlags.future.includes(flag) && config.future[flag]
)
}
function experimentalFlagsEnabled(config) {
if (config.experimental === 'all') {
return featureFlags.experimental
}
return Object.keys(_.get(config, 'experimental', {})).filter(
flag => featureFlags.experimental.includes(flag) && config.experimental[flag]
)
}
function futureFlagsAvailable(config) {
if (config.future === 'all') {
return []
}
return featureFlags.future.filter(flag => !_.has(config, ['future', flag]))
}
export function issueFlagNotices(config) {
const log = {
info(message) {
console.log(chalk.bold.cyan(' info'), '-', message)
console.log(chalk.bold.cyan('info'), '-', message)
},
warn(message) {
console.log(chalk.bold.yellow(' warn'), '-', message)
console.log(chalk.bold.yellow('warn'), '-', message)
},
risk(message) {
console.log(chalk.bold.magenta(' risk'), '-', message)
console.log(chalk.bold.magenta('risk'), '-', message)
},
}
if (_.some(featureFlags.future, flag => _.get(config, ['future', flag], false))) {
const changes = Object.keys(config.future)
.filter(flag => featureFlags.future.includes(flag) && config.future[flag])
if (futureFlagsEnabled(config).length > 0) {
const changes = futureFlagsEnabled(config)
.map(s => chalk.cyan(s))
.join(', ')
console.log()
log.info(`You have opted-in to future-facing breaking changes: ${changes}`)
log.info(
@ -43,11 +71,11 @@ export function issueFlagNotices(config) {
)
}
if (_.some(featureFlags.experimental, flag => _.get(config, ['experimental', flag], false))) {
const changes = Object.keys(config.experimental)
.filter(flag => featureFlags.experimental.includes(flag) && config.experimental[flag])
if (experimentalFlagsEnabled(config).length > 0) {
const changes = experimentalFlagsEnabled(config)
.map(s => chalk.yellow(s))
.join(', ')
console.log()
log.warn(`You have enabled experimental features: ${changes}`)
log.warn(
@ -55,11 +83,11 @@ export function issueFlagNotices(config) {
)
}
if (Object.keys(_.get(config, 'future', {})).length < featureFlags.future.length) {
const changes = featureFlags.future
.filter(flag => !_.has(config, ['future', flag]))
if (futureFlagsAvailable(config).length > 0) {
const changes = futureFlagsAvailable(config)
.map(s => chalk.magenta(s))
.join(', ')
console.log()
log.risk(`There are upcoming breaking changes: ${changes}`)
log.risk(