45 lines
2.5 KiB
JavaScript
45 lines
2.5 KiB
JavaScript
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/**
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* This module is compiled away!
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*
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* Parsing markdown comes with a couple of constants, such as minimum or maximum
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* sizes of certain sequences.
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* Additionally, there are a couple symbols used inside micromark.
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* These are all defined here, but compiled away by scripts.
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*/
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export const constants = /** @type {const} */ ({
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attentionSideAfter: 2, // Symbol to mark an attention sequence as after content: `a*`
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attentionSideBefore: 1, // Symbol to mark an attention sequence as before content: `*a`
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atxHeadingOpeningFenceSizeMax: 6, // 6 number signs is fine, 7 isn’t.
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autolinkDomainSizeMax: 63, // 63 characters is fine, 64 is too many.
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autolinkSchemeSizeMax: 32, // 32 characters is fine, 33 is too many.
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cdataOpeningString: 'CDATA[', // And preceded by `<![`.
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characterGroupPunctuation: 2, // Symbol used to indicate a character is punctuation
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characterGroupWhitespace: 1, // Symbol used to indicate a character is whitespace
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characterReferenceDecimalSizeMax: 7, // `�`.
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characterReferenceHexadecimalSizeMax: 6, // `�`.
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characterReferenceNamedSizeMax: 31, // `∳`.
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codeFencedSequenceSizeMin: 3, // At least 3 ticks or tildes are needed.
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contentTypeContent: 'content',
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contentTypeDocument: 'document',
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contentTypeFlow: 'flow',
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contentTypeString: 'string',
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contentTypeText: 'text',
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hardBreakPrefixSizeMin: 2, // At least 2 trailing spaces are needed.
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htmlBasic: 6, // Symbol for `<div`
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htmlCdata: 5, // Symbol for `<![CDATA[]]>`
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htmlComment: 2, // Symbol for `<!---->`
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htmlComplete: 7, // Symbol for `<x>`
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htmlDeclaration: 4, // Symbol for `<!doctype>`
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htmlInstruction: 3, // Symbol for `<?php?>`
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htmlRawSizeMax: 8, // Length of `textarea`.
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htmlRaw: 1, // Symbol for `<script>`
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linkResourceDestinationBalanceMax: 32, // See: <https://spec.commonmark.org/0.30/#link-destination>, <https://github.com/remarkjs/react-markdown/issues/658#issuecomment-984345577>
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linkReferenceSizeMax: 999, // See: <https://spec.commonmark.org/0.30/#link-label>
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listItemValueSizeMax: 10, // See: <https://spec.commonmark.org/0.30/#ordered-list-marker>
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numericBaseDecimal: 10,
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numericBaseHexadecimal: 0x10,
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tabSize: 4, // Tabs have a hard-coded size of 4, per CommonMark.
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thematicBreakMarkerCountMin: 3, // At least 3 asterisks, dashes, or underscores are needed.
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v8MaxSafeChunkSize: 10_000 // V8 (and potentially others) have problems injecting giant arrays into other arrays, hence we operate in chunks.
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})
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