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22 lines
443 B
JavaScript
22 lines
443 B
JavaScript
/**
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* @import {Options, State} from 'mdast-util-to-markdown'
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*/
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/**
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* @param {State} state
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* @returns {Exclude<Options['fence'], null | undefined>}
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*/
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export function checkFence(state) {
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const marker = state.options.fence || '`'
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if (marker !== '`' && marker !== '~') {
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throw new Error(
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'Cannot serialize code with `' +
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marker +
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'` for `options.fence`, expected `` ` `` or `~`'
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)
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}
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return marker
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}
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