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The `initialNow` prop is used to avoid content mismatches when Universal/SSR apps render date values using components like `<FormattedRelative>`. If this value is created in `render()`, then the server will generate it and then the client will also generate it during hydration / initial render, resulting in two different values and content mismatches like: > Warning: Text content did not match. Server: "in 1,741,545 seconds" Client: "in 1,741,543 seconds" If the value is instead generated in `getInitialProps`, then the client's initial rendering will match because it will use the same value sent down by the server. |
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| _document.js | ||
| about.js | ||
| index.js | ||