18 lines
446 B
JavaScript
18 lines
446 B
JavaScript
'use strict';
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var isProduction = process.env.NODE_ENV === 'production';
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var prefix = 'Invariant failed';
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function invariant(condition, message) {
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if (condition) {
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return;
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}
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if (isProduction) {
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throw new Error(prefix);
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}
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var provided = typeof message === 'function' ? message() : message;
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var value = provided ? prefix + ": " + provided : prefix;
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throw new Error(value);
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}
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module.exports = invariant;
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