ReactFlow前端拖拽模型与参数配置功能MVP
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const { resolve } = require('node:path')
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const semver = require('semver')
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const libnpmdiff = require('libnpmdiff')
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const npa = require('npm-package-arg')
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const pacote = require('pacote')
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const pickManifest = require('npm-pick-manifest')
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const { log, output } = require('proc-log')
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const pkgJson = require('@npmcli/package-json')
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const BaseCommand = require('../base-cmd.js')
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class Diff extends BaseCommand {
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static description = 'The registry diff command'
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static name = 'diff'
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static usage = [
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'[...<paths>]',
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]
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static params = [
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'diff',
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'diff-name-only',
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'diff-unified',
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'diff-ignore-all-space',
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'diff-no-prefix',
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'diff-src-prefix',
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'diff-dst-prefix',
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'diff-text',
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'global',
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'tag',
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'workspace',
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'workspaces',
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'include-workspace-root',
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]
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static workspaces = true
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static ignoreImplicitWorkspace = false
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async exec (args) {
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const specs = this.npm.config.get('diff').filter(d => d)
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if (specs.length > 2) {
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throw this.usageError(`Can't use more than two --diff arguments.`)
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}
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// execWorkspaces may have set this already
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if (!this.prefix) {
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this.prefix = this.npm.prefix
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}
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// this is the "top" directory, one up from node_modules in global mode we have to walk one up from globalDir because our node_modules is sometimes under ./lib, and in global mode we're only ever walking through node_modules (because we will have been given a package name already)
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if (this.npm.global) {
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this.top = resolve(this.npm.globalDir, '..')
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} else {
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this.top = this.prefix
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}
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const [a, b] = await this.retrieveSpecs(specs)
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log.info('diff', { src: a, dst: b })
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const res = await libnpmdiff([a, b], {
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...this.npm.flatOptions,
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diffFiles: args,
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where: this.top,
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})
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return output.standard(res)
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}
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async execWorkspaces (args) {
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await this.setWorkspaces()
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for (const workspacePath of this.workspacePaths) {
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this.top = workspacePath
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this.prefix = workspacePath
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await this.exec(args)
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}
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}
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// get the package name from the packument at `path`
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// throws if no packument is present OR if it does not have `name` attribute
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async packageName () {
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let name
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try {
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const { content: pkg } = await pkgJson.normalize(this.prefix)
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name = pkg.name
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} catch {
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log.verbose('diff', 'could not read project dir package.json')
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}
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if (!name) {
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throw this.usageError('Needs multiple arguments to compare or run from a project dir.')
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}
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return name
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}
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async retrieveSpecs ([a, b]) {
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if (a && b) {
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const specs = await this.convertVersionsToSpecs([a, b])
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return this.findVersionsByPackageName(specs)
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}
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// no arguments, defaults to comparing cwd to its latest published registry version
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if (!a) {
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const pkgName = await this.packageName()
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return [
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`${pkgName}@${this.npm.config.get('tag')}`,
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`file:${this.prefix}`,
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]
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}
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// single argument, used to compare wanted versions of an installed dependency or to compare the cwd to a published version
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let noPackageJson
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let pkgName
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try {
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const { content: pkg } = await pkgJson.normalize(this.prefix)
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pkgName = pkg.name
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} catch {
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log.verbose('diff', 'could not read project dir package.json')
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noPackageJson = true
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}
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const missingPackageJson =
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this.usageError('Needs multiple arguments to compare or run from a project dir.')
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// using a valid semver range, that means it should just diff the cwd against a published version to the registry using the same project name and the provided semver range
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if (semver.validRange(a)) {
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if (!pkgName) {
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throw missingPackageJson
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}
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return [
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`${pkgName}@${a}`,
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`file:${this.prefix}`,
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]
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}
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// when using a single package name as arg and it's part of the current install tree, then retrieve the current installed version and compare it against the same value `npm outdated` would suggest you to update to
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const spec = npa(a)
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if (spec.registry) {
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let actualTree
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let node
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const Arborist = require('@npmcli/arborist')
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try {
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const opts = {
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...this.npm.flatOptions,
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path: this.top,
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}
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const arb = new Arborist(opts)
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actualTree = await arb.loadActual(opts)
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node = actualTree &&
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actualTree.inventory.query('name', spec.name)
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.values().next().value
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} catch {
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log.verbose('diff', 'failed to load actual install tree')
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}
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if (!node || !node.name || !node.package || !node.package.version) {
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if (noPackageJson) {
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throw missingPackageJson
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}
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return [
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`${spec.name}@${spec.fetchSpec}`,
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`file:${this.prefix}`,
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]
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}
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const tryRootNodeSpec = () =>
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(actualTree && actualTree.edgesOut.get(spec.name) || {}).spec
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const tryAnySpec = () => {
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for (const edge of node.edgesIn) {
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return edge.spec
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}
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}
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const aSpec = `file:${node.realpath}`
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// finds what version of the package to compare against
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// if an exact version or tag was passed than it should use that
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// otherwise, work from the top of the arborist tree to find the original semver range declared in the package that depends on the package.
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let bSpec
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if (spec.rawSpec !== '*') {
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bSpec = spec.rawSpec
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} else {
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const bTargetVersion =
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tryRootNodeSpec()
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|| tryAnySpec()
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// figure out what to compare against
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// follows same logic to npm outdated "Wanted" results
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const packument = await pacote.packument(spec, {
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...this.npm.flatOptions,
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preferOnline: true,
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_isRoot: true,
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})
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bSpec = pickManifest(
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packument,
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bTargetVersion,
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{ ...this.npm.flatOptions }
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).version
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}
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return [
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`${spec.name}@${aSpec}`,
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`${spec.name}@${bSpec}`,
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]
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} else if (spec.type === 'directory') {
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return [
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`file:${spec.fetchSpec}`,
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`file:${this.prefix}`,
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]
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} else {
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throw this.usageError(`Spec type ${spec.type} not supported.`)
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}
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}
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async convertVersionsToSpecs ([a, b]) {
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const semverA = semver.validRange(a)
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const semverB = semver.validRange(b)
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// both specs are semver versions, assume current project dir name
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if (semverA && semverB) {
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let pkgName
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try {
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const { content: pkg } = await pkgJson.normalize(this.prefix)
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pkgName = pkg.name
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} catch {
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log.verbose('diff', 'could not read project dir package.json')
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}
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if (!pkgName) {
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throw this.usageError('Needs to be run from a project dir in order to diff two versions.')
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}
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return [`${pkgName}@${a}`, `${pkgName}@${b}`]
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}
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// otherwise uses the name from the other arg to figure out the spec.name of what to compare
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if (!semverA && semverB) {
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return [a, `${npa(a).name}@${b}`]
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}
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if (semverA && !semverB) {
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return [`${npa(b).name}@${a}`, b]
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}
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// no valid semver ranges used
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return [a, b]
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}
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async findVersionsByPackageName (specs) {
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let actualTree
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const Arborist = require('@npmcli/arborist')
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try {
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const opts = {
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...this.npm.flatOptions,
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path: this.top,
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}
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const arb = new Arborist(opts)
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actualTree = await arb.loadActual(opts)
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} catch {
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log.verbose('diff', 'failed to load actual install tree')
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}
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return specs.map(i => {
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const spec = npa(i)
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if (spec.rawSpec !== '*') {
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return i
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}
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const node = actualTree
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&& actualTree.inventory.query('name', spec.name)
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.values().next().value
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const res = !node || !node.package || !node.package.version
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? spec.fetchSpec
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: `file:${node.realpath}`
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return `${spec.name}@${res}`
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})
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}
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}
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module.exports = Diff
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