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constants.mjs
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constants.mjs
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// This module is compiled away!
//
// Parsing markdown comes with a couple of constants, such as minimum or maximum
// sizes of certain sequences.
// Additionally, there are a couple symbols used inside micromark.
// These are all defined here, but compiled away by scripts.
export default {
attentionSideBefore: 1, // Symbol to mark an attention sequence as before content: `*a`
attentionSideAfter: 2, // Symbol to mark an attention sequence as after content: `a*`
atxHeadingOpeningFenceSizeMax: 6, // 6 number signs is fine, 7 isn’t.
autolinkDomainSizeMax: 63, // 63 characters is fine, 64 is too many.
autolinkSchemeSizeMax: 32, // 32 characters is fine, 33 is too many.
cdataOpeningString: 'CDATA[', // And preceded by `<![`.
characterGroupWhitespace: 1, // Symbol used to indicate a character is whitespace
characterGroupPunctuation: 2, // Symbol used to indicate a character is whitespace
characterReferenceDecimalSizeMax: 7, // `&#9999999;`.
characterReferenceHexadecimalSizeMax: 6, // `&#xff9999;`.
characterReferenceNamedSizeMax: 31, // `&CounterClockwiseContourIntegral;`.
codeFencedSequenceSizeMin: 3, // At least 3 ticks or tildes are needed.
contentTypeFlow: 'flow',
contentTypeContent: 'content',
contentTypeString: 'string',
contentTypeText: 'text',
hardBreakPrefixSizeMin: 2, // At least 2 trailing spaces are needed.
htmlRaw: 1, // Symbol for `<script>`
htmlComment: 2, // Symbol for `<!---->`
htmlInstruction: 3, // Symbol for `<?php?>`
htmlDeclaration: 4, // Symbol for `<!doctype>`
htmlCdata: 5, // Symbol for `<![CDATA[]]>`
htmlBasic: 6, // Symbol for `<div`
htmlComplete: 7, // Symbol for `<x>`
htmlRawSizeMax: 8, // Length of `textarea`.
linkResourceDestinationBalanceMax: 3, // See: <https://spec.commonmark.org/0.29/#link-destination>
linkReferenceSizeMax: 999, // See: <https://spec.commonmark.org/0.29/#link-label>
listItemValueSizeMax: 10, // See: <https://spec.commonmark.org/0.29/#ordered-list-marker>
numericBaseDecimal: 10,
numericBaseHexadecimal: 0x10,
tabSize: 4, // Tabs have a hard-coded size of 4, per CommonMark.
thematicBreakMarkerCountMin: 3, // At least 3 asterisks, dashes, or underscores are needed.
v8MaxSafeChunkSize: 10000 // V8 (and potentially others) have problems injecting giant arrays into other arrays, hence we operate in chunks.
}

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