Method openFundingUrl

deps/npm/lib/commands/fund.js:149–205

({ path, tree, spec, fundingSourceNumber })

  }

  async openFundingUrl ({ path, tree, spec, fundingSourceNumber }) {
    const arg = npa(spec, path)

    const retrievePackageMetadata = () => {
      if (arg.type === 'directory') {
        if (tree.path === arg.fetchSpec) {
          // matches cwd, e.g: npm fund .
          return tree.package
        } else {
          // matches any file path within current arborist inventory
          for (const item of tree.inventory.values()) {
            if (item.path === arg.fetchSpec) {
              return item.package
            }
          }
        }
      } else {
        // tries to retrieve a package from arborist inventory by matching resulted package name from the provided spec
        const [item] = [...tree.inventory.query('name', arg.name)]
          .filter(i => semver.valid(i.package.version))
          .sort((a, b) => semver.rcompare(a.package.version, b.package.version))

        if (item) {
          return item.package
        }
      }
    }

    const { funding } =
      retrievePackageMetadata() ||
      (await pacote.manifest(arg, this.npm.flatOptions).catch(() => ({})))

    const validSources = [].concat(normalizeFunding(funding)).filter(isValidFunding)

    if (!validSources.length) {
      throw errCode(`No valid funding method available for: ${spec}`, 'ENOFUND')
    }

    const fundSource = fundingSourceNumber
      ? validSources[fundingSourceNumber - 1]
      : validSources.length === 1 ? validSources[0]
      : null

    if (fundSource) {
      return openUrl(this.npm, ...this.urlMessage(fundSource))
    }

    const ambiguousUrlMsg = [
      ...validSources.map((s, i) => `${i + 1}: ${this.urlMessage(s).reverse().join(': ')}`),
      `Run ${this.usageMessage({ which: '1' })}` +
      ', for example, to open the first funding URL listed in that package',
    ]
    if (fundingSourceNumber) {
      ambiguousUrlMsg.unshift(`--which=${fundingSourceNumber} is not a valid index`)
    }
    output.standard(ambiguousUrlMsg.join('\n'))
  }