23 lines
488 B
JavaScript
23 lines
488 B
JavaScript
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/**
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* @typedef {import('../types.js').Options} Options
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* @typedef {import('../types.js').State} State
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*/
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/**
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* @param {State} state
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* @returns {Exclude<Options['strong'], null | undefined>}
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*/
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export function checkStrong(state) {
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const marker = state.options.strong || '*'
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if (marker !== '*' && marker !== '_') {
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throw new Error(
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'Cannot serialize strong with `' +
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marker +
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'` for `options.strong`, expected `*`, or `_`'
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)
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}
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return marker
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}
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