bc518174
 王天杨
提交两个项目文件
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/**
* Use invariant() to assert state which your program assumes to be true.
*
* Provide sprintf-style format (only %s is supported) and arguments
* to provide information about what broke and what you were
* expecting.
*
* The invariant message will be stripped in production, but the invariant
* will remain to ensure logic does not differ in production.
*/
export function invariant(condition: any, format: string, ...args: any[]) {
if (isProduction()) {
if (format === undefined) {
throw new Error('invariant requires an error message argument')
}
}
if (!condition) {
let error
if (format === undefined) {
error = new Error(
'Minified exception occurred; use the non-minified dev environment ' +
'for the full error message and additional helpful warnings.',
)
} else {
let argIndex = 0
error = new Error(
format.replace(/%s/g, function () {
return args[argIndex++]
}),
)
error.name = 'Invariant Violation'
}
;(error as any).framesToPop = 1 // we don't care about invariant's own frame
throw error
}
}
function isProduction() {
return (
typeof process !== 'undefined' && process.env['NODE_ENV'] === 'production'
)
}
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