Mark
49 lines
1021 B
JavaScript
49 lines
1021 B
JavaScript
'use strict'
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const parse = require('./parse')
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const constants = require('../internal/constants')
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const SemVer = require('../classes/semver')
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const truncate = (version, truncation, options) => {
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if (!constants.RELEASE_TYPES.includes(truncation)) {
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return null
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}
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const clonedVersion = cloneInputVersion(version, options)
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return clonedVersion && doTruncation(clonedVersion, truncation)
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}
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const cloneInputVersion = (version, options) => {
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const versionStringToParse = (
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version instanceof SemVer ? version.version : version
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)
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return parse(versionStringToParse, options)
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}
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const doTruncation = (version, truncation) => {
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if (isPrerelease(truncation)) {
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return version.version
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}
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version.prerelease = []
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switch (truncation) {
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case 'major':
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version.minor = 0
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version.patch = 0
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break
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case 'minor':
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version.patch = 0
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break
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}
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return version.format()
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}
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const isPrerelease = (type) => {
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return type.startsWith('pre')
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}
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module.exports = truncate
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