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const SemVer = require('../classes/semver') const parse = require('./parse') const { safeRe: re, t } = require('../internal/re') const coerce = (version, options) => { if (version instanceof SemVer) { return version } if (typeof version === 'number') { version = String(version) } if (typeof version !== 'string') { return null } options = options || {} let match = null if (!options.rtl) { match = version.match(options.includePrerelease ? re[t.COERCEFULL] : re[t.COERCE]) } else { // Find the right-most coercible string that does not share // a terminus with a more left-ward coercible string. // Eg, '1.2.3.4' wants to coerce '2.3.4', not '3.4' or '4' // With includePrerelease option set, '1.2.3.4-rc' wants to coerce '2.3.4-rc', not '2.3.4' // // Walk through the string checking with a /g regexp // Manually set the index so as to pick up overlapping matches. // Stop when we get a match that ends at the string end, since no // coercible string can be more right-ward without the same terminus. const coerceRtlRegex = options.includePrerelease ? re[t.COERCERTLFULL] : re[t.COERCERTL] let next while ((next = coerceRtlRegex.exec(version)) && (!match || match.index + match[0].length !== version.length) ) { if (!match || next.index + next[0].length !== match.index + match[0].length) { match = next } coerceRtlRegex.lastIndex = next.index + next[1].length + next[2].length } // leave it in a clean state coerceRtlRegex.lastIndex = -1 } if (match === null) { return null } const major = match[2] const minor = match[3] || '0' const patch = match[4] || '0' const prerelease = options.includePrerelease && match[5] ? `-${match[5]}` : '' const build = options.includePrerelease && match[6] ? `+${match[6]}` : '' return parse(`${major}.${minor}.${patch}${prerelease}${build}`, options) } module.exports = coerce