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35 lines
824 B
Markdown
35 lines
824 B
Markdown
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##### `'this' keyword is equivalent to 'undefined'`
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When using `Rollup` as a bundler, you're possibly seeing this warning. It's related to the output of the typescript compiler used to transpile the `intl-messageformat` package. In this case, it's harmless and you can learn to live with it on your terminal or teach your rollup to ignore this kind of warning:
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```js
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// modified version of onwarn provided by sapper projects
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const onwarn = (warning, onwarn) => {
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if (
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(warning.code === 'CIRCULAR_DEPENDENCY' &&
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/[/\\]@sapper[/\\]/.test(warning.message))
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) {
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return
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}
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// ignores the annoying this is undefined warning
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if(warning.code === 'THIS_IS_UNDEFINED') {
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return
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}
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onwarn(warning)
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}
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export default {
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client: {
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...,
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onwarn,
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},
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server: {
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...,
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onwarn,
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},
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}
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```
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