diff --git a/.commitlintrc.js b/.commitlintrc.js
new file mode 100644
index 00000000..b706e527
--- /dev/null
+++ b/.commitlintrc.js
@@ -0,0 +1,12 @@
+/* This file is automatically added by @npmcli/template-oss. Do not edit. */
+
+module.exports = {
+  extends: ['@commitlint/config-conventional'],
+  rules: {
+    'type-enum': [2, 'always', ['feat', 'fix', 'docs', 'deps', 'chore']],
+    'header-max-length': [2, 'always', 80],
+    'subject-case': [0],
+    'body-max-line-length': [0],
+    'footer-max-line-length': [0],
+  },
+}
diff --git a/.github/CODEOWNERS b/.github/CODEOWNERS
new file mode 100644
index 00000000..2c54b0d2
--- /dev/null
+++ b/.github/CODEOWNERS
@@ -0,0 +1,3 @@
+# This file is automatically added by @npmcli/template-oss. Do not edit.
+
+* @npm/cli-team
diff --git a/.github/ISSUE_TEMPLATE/bug.yml b/.github/ISSUE_TEMPLATE/bug.yml
new file mode 100644
index 00000000..d043192f
--- /dev/null
+++ b/.github/ISSUE_TEMPLATE/bug.yml
@@ -0,0 +1,54 @@
+# This file is automatically added by @npmcli/template-oss. Do not edit.
+
+name: Bug
+description: File a bug/issue
+title: "[BUG] <title>"
+labels: [ Bug, Needs Triage ]
+
+body:
+  - type: checkboxes
+    attributes:
+      label: Is there an existing issue for this?
+      description: Please [search here](./issues) to see if an issue already exists for your problem.
+      options:
+        - label: I have searched the existing issues
+          required: true
+  - type: textarea
+    attributes:
+      label: Current Behavior
+      description: A clear & concise description of what you're experiencing.
+    validations:
+      required: false
+  - type: textarea
+    attributes:
+      label: Expected Behavior
+      description: A clear & concise description of what you expected to happen.
+    validations:
+      required: false
+  - type: textarea
+    attributes:
+      label: Steps To Reproduce
+      description: Steps to reproduce the behavior.
+      value: |
+        1. In this environment...
+        2. With this config...
+        3. Run '...'
+        4. See error...
+    validations:
+      required: false
+  - type: textarea
+    attributes:
+      label: Environment
+      description: |
+        examples:
+          - **npm**: 7.6.3
+          - **Node**: 13.14.0
+          - **OS**: Ubuntu 20.04
+          - **platform**: Macbook Pro
+      value: |
+        - npm:
+        - Node:
+        - OS:
+        - platform:
+    validations:
+      required: false
diff --git a/.github/ISSUE_TEMPLATE/config.yml b/.github/ISSUE_TEMPLATE/config.yml
new file mode 100644
index 00000000..d640909f
--- /dev/null
+++ b/.github/ISSUE_TEMPLATE/config.yml
@@ -0,0 +1,3 @@
+# This file is automatically added by @npmcli/template-oss. Do not edit.
+
+blank_issues_enabled: true
diff --git a/.github/actions/.DS_Store b/.github/actions/.DS_Store
new file mode 100644
index 00000000..7e69dc72
Binary files /dev/null and b/.github/actions/.DS_Store differ
diff --git a/.github/actions/create-check/action.yml b/.github/actions/create-check/action.yml
new file mode 100644
index 00000000..d1220c90
--- /dev/null
+++ b/.github/actions/create-check/action.yml
@@ -0,0 +1,52 @@
+# This file is automatically added by @npmcli/template-oss. Do not edit.
+
+name: 'Create Check'
+inputs:
+  name:
+    required: true
+  token:
+    required: true
+  sha:
+    required: true
+  check-name:
+    default: ''
+outputs:
+  check-id:
+    value: ${{ steps.create-check.outputs.check_id }}
+runs:
+  using: "composite"
+  steps:
+    - name: Get Workflow Job
+      uses: actions/github-script@v7
+      id: workflow
+      env:
+        JOB_NAME: "${{ inputs.name }}"
+        SHA: "${{ inputs.sha }}"
+      with:
+        result-encoding: string
+        script: |
+          const { repo: { owner, repo}, runId, serverUrl } = context
+          const { JOB_NAME, SHA } = process.env
+
+          const job = await github.rest.actions.listJobsForWorkflowRun({
+            owner,
+            repo,
+            run_id: runId,
+            per_page: 100
+          }).then(r => r.data.jobs.find(j => j.name.endsWith(JOB_NAME)))
+
+          return [
+            `This check is assosciated with ${serverUrl}/${owner}/${repo}/commit/${SHA}.`,
+            'Run logs:',
+            job?.html_url || `could not be found for a job ending with: "${JOB_NAME}"`,
+          ].join(' ')
+    - name: Create Check
+      uses: LouisBrunner/checks-action@v1.6.0
+      id: create-check
+      with:
+        token: ${{ inputs.token }}
+        sha: ${{ inputs.sha }}
+        status: in_progress
+        name: ${{ inputs.check-name || inputs.name }}
+        output: |
+          {"summary":"${{ steps.workflow.outputs.result }}"}
diff --git a/.github/actions/install-latest-npm/action.yml b/.github/actions/install-latest-npm/action.yml
new file mode 100644
index 00000000..580603dd
--- /dev/null
+++ b/.github/actions/install-latest-npm/action.yml
@@ -0,0 +1,58 @@
+# This file is automatically added by @npmcli/template-oss. Do not edit.
+
+name: 'Install Latest npm'
+description: 'Install the latest version of npm compatible with the Node version'
+inputs:
+  node:
+    description: 'Current Node version'
+    required: true
+runs:
+  using: "composite"
+  steps:
+    # node 10/12/14 ship with npm@6, which is known to fail when updating itself in windows
+    - name: Update Windows npm
+      if: |
+        runner.os == 'Windows' && (
+          startsWith(inputs.node, 'v10.') ||
+          startsWith(inputs.node, 'v12.') ||
+          startsWith(inputs.node, 'v14.')
+        )
+      shell: cmd
+      run: |
+        curl -sO https://registry.npmjs.org/npm/-/npm-7.5.4.tgz
+        tar xf npm-7.5.4.tgz
+        cd package
+        node lib/npm.js install --no-fund --no-audit -g ..\npm-7.5.4.tgz
+        cd ..
+        rmdir /s /q package
+    - name: Install Latest npm
+      shell: bash
+      env:
+        NODE_VERSION: ${{ inputs.node }}
+      working-directory: ${{ runner.temp }}
+      run: |
+        MATCH=""
+        SPECS=("latest" "next-10" "next-9" "next-8" "next-7" "next-6")
+
+        echo "node@$NODE_VERSION"
+
+        for SPEC in ${SPECS[@]}; do
+          ENGINES=$(npm view npm@$SPEC --json | jq -r '.engines.node')
+          echo "Checking if node@$NODE_VERSION satisfies npm@$SPEC ($ENGINES)"
+
+          if npx semver -r "$ENGINES" "$NODE_VERSION" > /dev/null; then
+            MATCH=$SPEC
+            echo "Found compatible version: npm@$MATCH"
+            break
+          fi
+        done
+
+        if [ -z $MATCH ]; then
+          echo "Could not find a compatible version of npm for node@$NODE_VERSION"
+          exit 1
+        fi
+
+        npm i --prefer-online --no-fund --no-audit -g npm@$MATCH
+    - name: npm Version
+      shell: bash
+      run: npm -v
diff --git a/.github/matchers/tap.json b/.github/matchers/tap.json
new file mode 100644
index 00000000..2c81ea98
--- /dev/null
+++ b/.github/matchers/tap.json
@@ -0,0 +1,32 @@
+{
+  "//@npmcli/template-oss": "This file is automatically added by @npmcli/template-oss. Do not edit.",
+  "problemMatcher": [
+    {
+      "owner": "tap",
+      "pattern": [
+        {
+          "regexp": "^\\s*not ok \\d+ - (.*)",
+          "message": 1
+        },
+        {
+          "regexp": "^\\s*---"
+        },
+        {
+          "regexp": "^\\s*at:"
+        },
+        {
+          "regexp": "^\\s*line:\\s*(\\d+)",
+          "line": 1
+        },
+        {
+          "regexp": "^\\s*column:\\s*(\\d+)",
+          "column": 1
+        },
+        {
+          "regexp": "^\\s*file:\\s*(.*)",
+          "file": 1
+        }
+      ]
+    }
+  ]
+}
diff --git a/.github/workflows/audit.yml b/.github/workflows/audit.yml
new file mode 100644
index 00000000..34bf1451
--- /dev/null
+++ b/.github/workflows/audit.yml
@@ -0,0 +1,47 @@
+# This file is automatically added by @npmcli/template-oss. Do not edit.
+
+name: Audit
+
+on:
+  workflow_dispatch:
+  schedule:
+    # "At 08:00 UTC (01:00 PT) on Monday" https://crontab.guru/#0_8_*_*_1
+    - cron: "0 8 * * 1"
+
+permissions:
+  contents: read
+
+jobs:
+  audit:
+    name: Audit Dependencies
+    if: github.repository_owner == 'npm'
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        shell: bash
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Setup Git User
+        run: |
+          git config --global user.email "npm-cli+bot@github.com"
+          git config --global user.name "npm CLI robot"
+      - name: Setup Node
+        uses: actions/setup-node@v4
+        id: node
+        with:
+          node-version: 20.x
+          check-latest: contains('20.x', '.x')
+      - name: Remove Template-OSS
+        if: matrix && matrix.node-version == '6.17.1'
+        run: |
+          # template-oss cannot be installed on older npms because there are transient deps
+          # that use "npm:" aliases which are not supported
+          jq 'del(.devDependencies["@npmcli/template-oss"])' package.json > package.json-update
+          mv package.json-update package.json
+      - name: Install Dependencies
+        run: npm i --ignore-scripts --no-audit --no-fund --package-lock
+      - name: Run Production Audit
+        run: npm audit --omit=dev
+      - name: Run Full Audit
+        run: npm audit --audit-level=none
diff --git a/.github/workflows/ci-release.yml b/.github/workflows/ci-release.yml
new file mode 100644
index 00000000..45a7a032
--- /dev/null
+++ b/.github/workflows/ci-release.yml
@@ -0,0 +1,136 @@
+# This file is automatically added by @npmcli/template-oss. Do not edit.
+
+name: CI - Release
+
+on:
+  workflow_dispatch:
+    inputs:
+      ref:
+        required: true
+        type: string
+        default: release/v6
+  workflow_call:
+    inputs:
+      ref:
+        required: true
+        type: string
+      check-sha:
+        required: true
+        type: string
+
+permissions:
+  contents: read
+  checks: write
+
+jobs:
+  lint-all:
+    name: Lint All
+    if: github.repository_owner == 'npm'
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        shell: bash
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          ref: ${{ inputs.ref }}
+      - name: Setup Git User
+        run: |
+          git config --global user.email "npm-cli+bot@github.com"
+          git config --global user.name "npm CLI robot"
+      - name: Create Check
+        id: create-check
+        if: ${{ inputs.check-sha }}
+        uses: ./.github/actions/create-check
+        with:
+          name: "Lint All"
+          token: ${{ secrets.GITHUB_TOKEN }}
+          sha: ${{ inputs.check-sha }}
+      - name: Setup Node
+        uses: actions/setup-node@v4
+        id: node
+        with:
+          node-version: 20.x
+          check-latest: contains('20.x', '.x')
+      - name: Remove Template-OSS
+        if: matrix && matrix.node-version == '6.17.1'
+        run: |
+          # template-oss cannot be installed on older npms because there are transient deps
+          # that use "npm:" aliases which are not supported
+          jq 'del(.devDependencies["@npmcli/template-oss"])' package.json > package.json-update
+          mv package.json-update package.json
+      - name: Install Dependencies
+        run: npm i --ignore-scripts --no-audit --no-fund
+      - name: Lint
+        run: npm run lint --ignore-scripts
+      - name: Post Lint
+        run: npm run postlint --ignore-scripts
+      - name: Conclude Check
+        uses: LouisBrunner/checks-action@v1.6.0
+        if: steps.create-check.outputs.check-id && always()
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          conclusion: ${{ job.status }}
+          check_id: ${{ steps.create-check.outputs.check-id }}
+
+  test-all:
+    name: Test All - ${{ matrix.platform.name }} - ${{ matrix.node-version }}
+    if: github.repository_owner == 'npm'
+    strategy:
+      fail-fast: false
+      matrix:
+        platform:
+          - name: Linux
+            os: ubuntu-latest
+            shell: bash
+        node-version:
+          - 6.17.1
+          - 20.x
+    runs-on: ${{ matrix.platform.os }}
+    defaults:
+      run:
+        shell: ${{ matrix.platform.shell }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          ref: ${{ inputs.ref }}
+      - name: Setup Git User
+        run: |
+          git config --global user.email "npm-cli+bot@github.com"
+          git config --global user.name "npm CLI robot"
+      - name: Create Check
+        id: create-check
+        if: ${{ inputs.check-sha }}
+        uses: ./.github/actions/create-check
+        with:
+          name: "Test All - ${{ matrix.platform.name }} - ${{ matrix.node-version }}"
+          token: ${{ secrets.GITHUB_TOKEN }}
+          sha: ${{ inputs.check-sha }}
+      - name: Setup Node
+        uses: actions/setup-node@v4
+        id: node
+        with:
+          node-version: ${{ matrix.node-version }}
+          check-latest: contains(matrix.node-version, '.x')
+      - name: Remove Template-OSS
+        if: matrix && matrix.node-version == '6.17.1'
+        run: |
+          # template-oss cannot be installed on older npms because there are transient deps
+          # that use "npm:" aliases which are not supported
+          jq 'del(.devDependencies["@npmcli/template-oss"])' package.json > package.json-update
+          mv package.json-update package.json
+      - name: Install Dependencies
+        run: npm i --ignore-scripts --no-audit --no-fund
+      - name: Add Problem Matcher
+        run: echo "::add-matcher::.github/matchers/tap.json"
+      - name: Test
+        run: npm test --ignore-scripts
+      - name: Conclude Check
+        uses: LouisBrunner/checks-action@v1.6.0
+        if: steps.create-check.outputs.check-id && always()
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          conclusion: ${{ job.status }}
+          check_id: ${{ steps.create-check.outputs.check-id }}
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 00000000..186b1b24
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,96 @@
+# This file is automatically added by @npmcli/template-oss. Do not edit.
+
+name: CI
+
+on:
+  workflow_dispatch:
+  pull_request:
+  push:
+    branches:
+      - main
+      - release/v*
+  schedule:
+    # "At 09:00 UTC (02:00 PT) on Monday" https://crontab.guru/#0_9_*_*_1
+    - cron: "0 9 * * 1"
+
+permissions:
+  contents: read
+
+jobs:
+  lint:
+    name: Lint
+    if: github.repository_owner == 'npm'
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        shell: bash
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Setup Git User
+        run: |
+          git config --global user.email "npm-cli+bot@github.com"
+          git config --global user.name "npm CLI robot"
+      - name: Setup Node
+        uses: actions/setup-node@v4
+        id: node
+        with:
+          node-version: 20.x
+          check-latest: contains('20.x', '.x')
+      - name: Remove Template-OSS
+        if: matrix && matrix.node-version == '6.17.1'
+        run: |
+          # template-oss cannot be installed on older npms because there are transient deps
+          # that use "npm:" aliases which are not supported
+          jq 'del(.devDependencies["@npmcli/template-oss"])' package.json > package.json-update
+          mv package.json-update package.json
+      - name: Install Dependencies
+        run: npm i --ignore-scripts --no-audit --no-fund
+      - name: Lint
+        run: npm run lint --ignore-scripts
+      - name: Post Lint
+        run: npm run postlint --ignore-scripts
+
+  test:
+    name: Test - ${{ matrix.platform.name }} - ${{ matrix.node-version }}
+    if: github.repository_owner == 'npm'
+    strategy:
+      fail-fast: false
+      matrix:
+        platform:
+          - name: Linux
+            os: ubuntu-latest
+            shell: bash
+        node-version:
+          - 6.17.1
+          - 20.x
+    runs-on: ${{ matrix.platform.os }}
+    defaults:
+      run:
+        shell: ${{ matrix.platform.shell }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Setup Git User
+        run: |
+          git config --global user.email "npm-cli+bot@github.com"
+          git config --global user.name "npm CLI robot"
+      - name: Setup Node
+        uses: actions/setup-node@v4
+        id: node
+        with:
+          node-version: ${{ matrix.node-version }}
+          check-latest: contains(matrix.node-version, '.x')
+      - name: Remove Template-OSS
+        if: matrix && matrix.node-version == '6.17.1'
+        run: |
+          # template-oss cannot be installed on older npms because there are transient deps
+          # that use "npm:" aliases which are not supported
+          jq 'del(.devDependencies["@npmcli/template-oss"])' package.json > package.json-update
+          mv package.json-update package.json
+      - name: Install Dependencies
+        run: npm i --ignore-scripts --no-audit --no-fund
+      - name: Add Problem Matcher
+        run: echo "::add-matcher::.github/matchers/tap.json"
+      - name: Test
+        run: npm test --ignore-scripts
diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
new file mode 100644
index 00000000..5304739f
--- /dev/null
+++ b/.github/workflows/codeql-analysis.yml
@@ -0,0 +1,41 @@
+# This file is automatically added by @npmcli/template-oss. Do not edit.
+
+name: CodeQL
+
+on:
+  push:
+    branches:
+      - main
+      - release/v*
+  pull_request:
+    branches:
+      - main
+      - release/v*
+  schedule:
+    # "At 10:00 UTC (03:00 PT) on Monday" https://crontab.guru/#0_10_*_*_1
+    - cron: "0 10 * * 1"
+
+permissions:
+  contents: read
+
+jobs:
+  analyze:
+    name: Analyze
+    runs-on: ubuntu-latest
+    permissions:
+      actions: read
+      contents: read
+      security-events: write
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Setup Git User
+        run: |
+          git config --global user.email "npm-cli+bot@github.com"
+          git config --global user.name "npm CLI robot"
+      - name: Initialize CodeQL
+        uses: github/codeql-action/init@v3
+        with:
+          languages: javascript
+      - name: Perform CodeQL Analysis
+        uses: github/codeql-action/analyze@v3
diff --git a/.github/workflows/pull-request.yml b/.github/workflows/pull-request.yml
new file mode 100644
index 00000000..c7b3fc3e
--- /dev/null
+++ b/.github/workflows/pull-request.yml
@@ -0,0 +1,56 @@
+# This file is automatically added by @npmcli/template-oss. Do not edit.
+
+name: Pull Request
+
+on:
+  pull_request:
+    types:
+      - opened
+      - reopened
+      - edited
+      - synchronize
+
+permissions:
+  contents: read
+
+jobs:
+  commitlint:
+    name: Lint Commits
+    if: github.repository_owner == 'npm'
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        shell: bash
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - name: Setup Git User
+        run: |
+          git config --global user.email "npm-cli+bot@github.com"
+          git config --global user.name "npm CLI robot"
+      - name: Setup Node
+        uses: actions/setup-node@v4
+        id: node
+        with:
+          node-version: 20.x
+          check-latest: contains('20.x', '.x')
+      - name: Remove Template-OSS
+        if: matrix && matrix.node-version == '6.17.1'
+        run: |
+          # template-oss cannot be installed on older npms because there are transient deps
+          # that use "npm:" aliases which are not supported
+          jq 'del(.devDependencies["@npmcli/template-oss"])' package.json > package.json-update
+          mv package.json-update package.json
+      - name: Install Dependencies
+        run: npm i --ignore-scripts --no-audit --no-fund
+      - name: Run Commitlint on Commits
+        id: commit
+        continue-on-error: true
+        run: npx --offline commitlint -V --from 'origin/${{ github.base_ref }}' --to ${{ github.event.pull_request.head.sha }}
+      - name: Run Commitlint on PR Title
+        if: steps.commit.outcome == 'failure'
+        env:
+          PR_TITLE: ${{ github.event.pull_request.title }}
+        run: echo "$PR_TITLE" | npx --offline commitlint -V
diff --git a/.github/workflows/release-integration.yml b/.github/workflows/release-integration.yml
new file mode 100644
index 00000000..539c2c98
--- /dev/null
+++ b/.github/workflows/release-integration.yml
@@ -0,0 +1,77 @@
+# This file is automatically added by @npmcli/template-oss. Do not edit.
+
+name: Release Integration
+
+on:
+  workflow_dispatch:
+    inputs:
+      releases:
+        required: true
+        type: string
+        description: 'A json array of releases. Required fields: publish: tagName, publishTag. publish check: pkgName, version'
+  workflow_call:
+    inputs:
+      releases:
+        required: true
+        type: string
+        description: 'A json array of releases. Required fields: publish: tagName, publishTag. publish check: pkgName, version'
+    secrets:
+      PUBLISH_TOKEN:
+        required: true
+
+permissions:
+  contents: read
+  id-token: write
+
+jobs:
+  publish:
+    name: Publish
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        shell: bash
+    permissions:
+      id-token: write
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          ref: ${{ fromJSON(inputs.releases)[0].tagName }}
+      - name: Setup Git User
+        run: |
+          git config --global user.email "npm-cli+bot@github.com"
+          git config --global user.name "npm CLI robot"
+      - name: Setup Node
+        uses: actions/setup-node@v4
+        id: node
+        with:
+          node-version: 20.x
+          check-latest: contains('20.x', '.x')
+      - name: Remove Template-OSS
+        if: matrix && matrix.node-version == '6.17.1'
+        run: |
+          # template-oss cannot be installed on older npms because there are transient deps
+          # that use "npm:" aliases which are not supported
+          jq 'del(.devDependencies["@npmcli/template-oss"])' package.json > package.json-update
+          mv package.json-update package.json
+      - name: Install Dependencies
+        run: npm i --ignore-scripts --no-audit --no-fund
+      - name: Set npm authToken
+        run: npm config set '//registry.npmjs.org/:_authToken'=\${PUBLISH_TOKEN}
+      - name: Publish
+        env:
+          PUBLISH_TOKEN: ${{ secrets.PUBLISH_TOKEN }}
+          RELEASES: ${{ inputs.releases }}
+        run: |
+          EXIT_CODE=0
+
+          for release in $(echo $RELEASES | jq -r '.[] | @base64'); do
+            PUBLISH_TAG=$(echo "$release" | base64 --decode | jq -r .publishTag)
+            npm publish --provenance --tag="$PUBLISH_TAG"
+            STATUS=$?
+            if [[ "$STATUS" -eq 1 ]]; then
+              EXIT_CODE=$STATUS
+            fi
+          done
+
+          exit $EXIT_CODE
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
new file mode 100644
index 00000000..1ce61177
--- /dev/null
+++ b/.github/workflows/release.yml
@@ -0,0 +1,315 @@
+# This file is automatically added by @npmcli/template-oss. Do not edit.
+
+name: Release
+
+on:
+  push:
+    branches:
+      - main
+      - release/v*
+
+permissions:
+  contents: write
+  pull-requests: write
+  checks: write
+
+jobs:
+  release:
+    outputs:
+      pr: ${{ steps.release.outputs.pr }}
+      pr-branch: ${{ steps.release.outputs.pr-branch }}
+      pr-number: ${{ steps.release.outputs.pr-number }}
+      pr-sha: ${{ steps.release.outputs.pr-sha }}
+      releases: ${{ steps.release.outputs.releases }}
+      comment-id: ${{ steps.create-comment.outputs.comment-id || steps.update-comment.outputs.comment-id }}
+      check-id: ${{ steps.create-check.outputs.check-id }}
+    name: Release
+    if: github.repository_owner == 'npm'
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        shell: bash
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Setup Git User
+        run: |
+          git config --global user.email "npm-cli+bot@github.com"
+          git config --global user.name "npm CLI robot"
+      - name: Setup Node
+        uses: actions/setup-node@v4
+        id: node
+        with:
+          node-version: 20.x
+          check-latest: contains('20.x', '.x')
+      - name: Remove Template-OSS
+        if: matrix && matrix.node-version == '6.17.1'
+        run: |
+          # template-oss cannot be installed on older npms because there are transient deps
+          # that use "npm:" aliases which are not supported
+          jq 'del(.devDependencies["@npmcli/template-oss"])' package.json > package.json-update
+          mv package.json-update package.json
+      - name: Install Dependencies
+        run: npm i --ignore-scripts --no-audit --no-fund
+      - name: Release Please
+        id: release
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: npx --offline template-oss-release-please --branch="${{ github.ref_name }}" --backport="6" --defaultTag="latest"
+      - name: Create Release Manager Comment Text
+        if: steps.release.outputs.pr-number
+        uses: actions/github-script@v7
+        id: comment-text
+        with:
+          result-encoding: string
+          script: |
+            const { runId, repo: { owner, repo } } = context
+            const { data: workflow } = await github.rest.actions.getWorkflowRun({ owner, repo, run_id: runId })
+            return['## Release Manager', `Release workflow run: ${workflow.html_url}`].join('\n\n')
+      - name: Find Release Manager Comment
+        uses: peter-evans/find-comment@v2
+        if: steps.release.outputs.pr-number
+        id: found-comment
+        with:
+          issue-number: ${{ steps.release.outputs.pr-number }}
+          comment-author: 'github-actions[bot]'
+          body-includes: '## Release Manager'
+      - name: Create Release Manager Comment
+        id: create-comment
+        if: steps.release.outputs.pr-number && !steps.found-comment.outputs.comment-id
+        uses: peter-evans/create-or-update-comment@v3
+        with:
+          issue-number: ${{ steps.release.outputs.pr-number }}
+          body: ${{ steps.comment-text.outputs.result }}
+      - name: Update Release Manager Comment
+        id: update-comment
+        if: steps.release.outputs.pr-number && steps.found-comment.outputs.comment-id
+        uses: peter-evans/create-or-update-comment@v3
+        with:
+          comment-id: ${{ steps.found-comment.outputs.comment-id }}
+          body: ${{ steps.comment-text.outputs.result }}
+          edit-mode: 'replace'
+      - name: Create Check
+        id: create-check
+        uses: ./.github/actions/create-check
+        if: steps.release.outputs.pr-sha
+        with:
+          name: "Release"
+          token: ${{ secrets.GITHUB_TOKEN }}
+          sha: ${{ steps.release.outputs.pr-sha }}
+
+  update:
+    needs: release
+    outputs:
+      sha: ${{ steps.commit.outputs.sha }}
+      check-id: ${{ steps.create-check.outputs.check-id }}
+    name: Update - Release
+    if: github.repository_owner == 'npm' && needs.release.outputs.pr
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        shell: bash
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+          ref: ${{ needs.release.outputs.pr-branch }}
+      - name: Setup Git User
+        run: |
+          git config --global user.email "npm-cli+bot@github.com"
+          git config --global user.name "npm CLI robot"
+      - name: Setup Node
+        uses: actions/setup-node@v4
+        id: node
+        with:
+          node-version: 20.x
+          check-latest: contains('20.x', '.x')
+      - name: Remove Template-OSS
+        if: matrix && matrix.node-version == '6.17.1'
+        run: |
+          # template-oss cannot be installed on older npms because there are transient deps
+          # that use "npm:" aliases which are not supported
+          jq 'del(.devDependencies["@npmcli/template-oss"])' package.json > package.json-update
+          mv package.json-update package.json
+      - name: Install Dependencies
+        run: npm i --ignore-scripts --no-audit --no-fund
+      - name: Create Release Manager Checklist Text
+        id: comment-text
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: npm exec --offline -- template-oss-release-manager --pr="${{ needs.release.outputs.pr-number }}" --backport="6" --defaultTag="latest" --publish
+      - name: Append Release Manager Comment
+        uses: peter-evans/create-or-update-comment@v3
+        with:
+          comment-id: ${{ needs.release.outputs.comment-id }}
+          body: ${{ steps.comment-text.outputs.result }}
+          edit-mode: 'append'
+      - name: Run Post Pull Request Actions
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: npm run rp-pull-request --ignore-scripts --if-present -- --pr="${{ needs.release.outputs.pr-number }}" --commentId="${{ needs.release.outputs.comment-id }}"
+      - name: Commit
+        id: commit
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          git commit --all --amend --no-edit || true
+          git push --force-with-lease
+          echo "sha=$(git rev-parse HEAD)" >> $GITHUB_OUTPUT
+      - name: Create Check
+        id: create-check
+        uses: ./.github/actions/create-check
+        with:
+          name: "Update - Release"
+          check-name: "Release"
+          token: ${{ secrets.GITHUB_TOKEN }}
+          sha: ${{ steps.commit.outputs.sha }}
+      - name: Conclude Check
+        uses: LouisBrunner/checks-action@v1.6.0
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          conclusion: ${{ job.status }}
+          check_id: ${{ needs.release.outputs.check-id }}
+
+  ci:
+    name: CI - Release
+    needs: [ release, update ]
+    if: needs.release.outputs.pr
+    uses: ./.github/workflows/ci-release.yml
+    with:
+      ref: ${{ needs.release.outputs.pr-branch }}
+      check-sha: ${{ needs.update.outputs.sha }}
+
+  post-ci:
+    needs: [ release, update, ci ]
+    name: Post CI - Release
+    if: github.repository_owner == 'npm' && needs.release.outputs.pr && always()
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        shell: bash
+    steps:
+      - name: Get CI Conclusion
+        id: conclusion
+        run: |
+          result=""
+          if [[ "${{ contains(needs.*.result, 'failure') }}" == "true" ]]; then
+            result="failure"
+          elif [[ "${{ contains(needs.*.result, 'cancelled') }}" == "true" ]]; then
+            result="cancelled"
+          else
+            result="success"
+          fi
+          echo "result=$result" >> $GITHUB_OUTPUT
+      - name: Conclude Check
+        uses: LouisBrunner/checks-action@v1.6.0
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          conclusion: ${{ steps.conclusion.outputs.result }}
+          check_id: ${{ needs.update.outputs.check-id }}
+
+  post-release:
+    needs: release
+    outputs:
+      comment-id: ${{ steps.create-comment.outputs.comment-id }}
+    name: Post Release - Release
+    if: github.repository_owner == 'npm' && needs.release.outputs.releases
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        shell: bash
+    steps:
+      - name: Create Release PR Comment Text
+        id: comment-text
+        uses: actions/github-script@v7
+        env:
+          RELEASES: ${{ needs.release.outputs.releases }}
+        with:
+          result-encoding: string
+          script: |
+            const releases = JSON.parse(process.env.RELEASES)
+            const { runId, repo: { owner, repo } } = context
+            const issue_number = releases[0].prNumber
+            const runUrl = `https://github.com/${owner}/${repo}/actions/runs/${runId}`
+
+            return [
+              '## Release Workflow\n',
+              ...releases.map(r => `- \`${r.pkgName}@${r.version}\` ${r.url}`),
+              `- Workflow run: :arrows_counterclockwise: ${runUrl}`,
+            ].join('\n')
+      - name: Create Release PR Comment
+        id: create-comment
+        uses: peter-evans/create-or-update-comment@v3
+        with:
+          issue-number: ${{ fromJSON(needs.release.outputs.releases)[0].prNumber }}
+          body: ${{ steps.comment-text.outputs.result }}
+
+  release-integration:
+    needs: release
+    name: Release Integration
+    if: needs.release.outputs.releases
+    uses: ./.github/workflows/release-integration.yml
+    permissions:
+      contents: read
+      id-token: write
+    secrets:
+      PUBLISH_TOKEN: ${{ secrets.PUBLISH_TOKEN }}
+    with:
+      releases: ${{ needs.release.outputs.releases }}
+
+  post-release-integration:
+    needs: [ release, release-integration, post-release ]
+    name: Post Release Integration - Release
+    if: github.repository_owner == 'npm' && needs.release.outputs.releases && always()
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        shell: bash
+    steps:
+      - name: Get Post Release Conclusion
+        id: conclusion
+        run: |
+          if [[ "${{ contains(needs.*.result, 'failure') }}" == "true" ]]; then
+            result="x"
+          elif [[ "${{ contains(needs.*.result, 'cancelled') }}" == "true" ]]; then
+            result="heavy_multiplication_x"
+          else
+            result="white_check_mark"
+          fi
+          echo "result=$result" >> $GITHUB_OUTPUT
+      - name: Find Release PR Comment
+        uses: peter-evans/find-comment@v2
+        id: found-comment
+        with:
+          issue-number: ${{ fromJSON(needs.release.outputs.releases)[0].prNumber }}
+          comment-author: 'github-actions[bot]'
+          body-includes: '## Release Workflow'
+      - name: Create Release PR Comment Text
+        id: comment-text
+        if: steps.found-comment.outputs.comment-id
+        uses: actions/github-script@v7
+        env:
+          RESULT: ${{ steps.conclusion.outputs.result }}
+          BODY: ${{ steps.found-comment.outputs.comment-body }}
+        with:
+          result-encoding: string
+          script: |
+            const { RESULT, BODY } = process.env
+            const body = [BODY.replace(/(Workflow run: :)[a-z_]+(:)/, `$1${RESULT}$2`)]
+            if (RESULT !== 'white_check_mark') {
+              body.push(':rotating_light::rotating_light::rotating_light:')
+              body.push([
+                '@npm/cli-team: The post-release workflow failed for this release.',
+                'Manual steps may need to be taken after examining the workflow output.'
+              ].join(' '))
+              body.push(':rotating_light::rotating_light::rotating_light:')
+            }
+            return body.join('\n\n').trim()
+      - name: Update Release PR Comment
+        if: steps.comment-text.outputs.result
+        uses: peter-evans/create-or-update-comment@v3
+        with:
+          comment-id: ${{ steps.found-comment.outputs.comment-id }}
+          body: ${{ steps.comment-text.outputs.result }}
+          edit-mode: 'replace'
diff --git a/.gitignore b/.gitignore
index 7a13b7a3..5f004e42 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,33 @@
-/node_modules
-.*.swp
-coverage/
-.nyc_output/
-.idea
+# This file is automatically added by @npmcli/template-oss. Do not edit.
+
+# ignore everything in the root
+/*
+
+!**/.gitignore
+!/.commitlintrc.js
+!/.git-blame-ignore-revs
+!/.github/
+!/.gitignore
+!/.npmrc
+!/.prettierignore
+!/.prettierrc.js
+!/.release-please-manifest.json
+!/bin/
+!/CHANGELOG*
+!/CODE_OF_CONDUCT.md
+!/CONTRIBUTING.md
+!/docs/
+!/lib/
+!/LICENSE*
+!/map.js
+!/package.json
+!/range.bnf
+!/README*
+!/release-please-config.json
+!/scripts/
+!/SECURITY.md
+!/semver.js
+!/tap-snapshots/
+!/test/
+!/tsconfig.json
+tap-testdir*/
diff --git a/.npmrc b/.npmrc
new file mode 100644
index 00000000..529f93e7
--- /dev/null
+++ b/.npmrc
@@ -0,0 +1,3 @@
+; This file is automatically added by @npmcli/template-oss. Do not edit.
+
+package-lock=false
diff --git a/.release-please-manifest.json b/.release-please-manifest.json
new file mode 100644
index 00000000..052edd02
--- /dev/null
+++ b/.release-please-manifest.json
@@ -0,0 +1,3 @@
+{
+  ".": "5.7.2"
+}
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index 90b879c1..00000000
--- a/.travis.yml
+++ /dev/null
@@ -1,16 +0,0 @@
-language: node_js
-
-node_js:
-  - 11
-  - 10
-  - 8
-
-os:
-  - linux
-
-cache:
-  directories:
-    - $HOME/.npm
-
-notifications:
-  email: false
diff --git a/CHANGELOG.md b/CHANGELOG.md
index f567dd3f..1cf44c6f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,35 +1,10 @@
-# changes log
+# Changelog
 
-## 6.2.0
+## [5.7.2](https://github.com/npm/node-semver/compare/v5.7.1...v5.7.2) (2023-07-10)
 
-* Coerce numbers to strings when passed to semver.coerce()
-* Add `rtl` option to coerce from right to left
+### Bug Fixes
 
-## 6.1.3
-
-* Handle X-ranges properly in includePrerelease mode
-
-## 6.1.2
-
-* Do not throw when testing invalid version strings
-
-## 6.1.1
-
-* Add options support for semver.coerce()
-* Handle undefined version passed to Range.test
-
-## 6.1.0
-
-* Add semver.compareBuild function
-* Support `*` in semver.intersects
-
-## 6.0
-
-* Fix `intersects` logic.
-
-    This is technically a bug fix, but since it is also a change to behavior
-    that may require users updating their code, it is marked as a major
-    version increment.
+* [`2f8fd41`](https://github.com/npm/node-semver/commit/2f8fd41487acf380194579ecb6f8b1bbfe116be0) [#585](https://github.com/npm/node-semver/pull/585) better handling of whitespace (#585) (@joaomoreno, @lukekarrys)
 
 ## 5.7
 
diff --git a/CODE_OF_CONDUCT.md b/CODE_OF_CONDUCT.md
new file mode 100644
index 00000000..167043c2
--- /dev/null
+++ b/CODE_OF_CONDUCT.md
@@ -0,0 +1,7 @@
+<!-- This file is automatically added by @npmcli/template-oss. Do not edit. -->
+
+All interactions in this repo are covered by the [npm Code of
+Conduct](https://docs.npmjs.com/policies/conduct)
+
+The npm cli team may, at its own discretion, moderate, remove, or edit
+any interactions such as pull requests, issues, and comments.
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index e88ff8f8..69e88788 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -1 +1,50 @@
-Please consider signing [the neveragain.tech pledge](http://neveragain.tech/)
+<!-- This file is automatically added by @npmcli/template-oss. Do not edit. -->
+
+# Contributing
+
+## Code of Conduct
+
+All interactions in the **npm** organization on GitHub are considered to be covered by our standard [Code of Conduct](https://docs.npmjs.com/policies/conduct).
+
+## Reporting Bugs
+
+Before submitting a new bug report please search for an existing or similar report.
+
+Use one of our existing issue templates if you believe you've come across a unique problem.
+
+Duplicate issues, or issues that don't use one of our templates may get closed without a response.
+
+## Pull Request Conventions
+
+### Commits
+
+We use [Conventional Commits](https://www.conventionalcommits.org/en/v1.0.0/).
+
+When opening a pull request please be sure that either the pull request title, or each commit in the pull request, has one of the following prefixes:
+
+ - `feat`: For when introducing a new feature.  The result will be a new semver minor version of the package when it is next published.
+ - `fix`: For bug fixes. The result will be a new semver patch version of the package when it is next published.
+ - `docs`: For documentation updates.  The result will be a new semver patch version of the package when it is next published.
+ - `chore`: For changes that do not affect the published module.  Often these are changes to tests.  The result will be *no* change to the version of the package when it is next published (as the commit does not affect the published version).
+
+### Test Coverage
+
+Pull requests made against this repo will run `npm test` automatically.  Please make sure tests pass locally before submitting a PR.
+
+Every new feature or bug fix should come with a corresponding test or tests that validate the solutions. Testing also reports on code coverage and will fail if code coverage drops.
+
+### Linting
+
+Linting is also done automatically once tests pass.  `npm run lintfix` will fix most linting errors automatically.
+
+Please make sure linting passes before submitting a PR.
+
+## What _not_ to contribute?
+
+### Dependencies
+
+It should be noted that our team does not accept third-party dependency updates/PRs.  If you submit a PR trying to update our dependencies we will close it with or without a reference to these contribution guidelines.
+
+### Tools/Automation
+
+Our core team is responsible for the maintenance of the tooling/automation in this project and we ask contributors to not make changes to these when contributing (e.g. `.github/*`, `.eslintrc.json`, `.licensee.json`).  Most of those files also have a header at the top to remind folks they are automatically generated.  Pull requests that alter these will not be accepted.
diff --git a/README.md b/README.md
index 2293a14f..f8dfa5a0 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,7 @@ semver(1) -- The semantic versioner for npm
 ## Install
 
 ```bash
-npm install semver
+npm install --save semver
 ````
 
 ## Usage
@@ -60,12 +60,6 @@ Options:
         Coerce a string into SemVer if possible
         (does not imply --loose)
 
---rtl
-        Coerce version strings right to left
-
---ltr
-        Coerce version strings left to right (default)
-
 Program exits successfully if any valid version satisfies
 all supplied ranges, and prints all satisfying versions.
 
@@ -237,7 +231,7 @@ comparator.  Allows minor-level changes if not.
 
 #### Caret Ranges `^1.2.3` `^0.2.5` `^0.0.4`
 
-Allows changes that do not modify the left-most non-zero element in the
+Allows changes that do not modify the left-most non-zero digit in the
 `[major, minor, patch]` tuple.  In other words, this allows patch and
 minor updates for versions `1.0.0` and above, patch updates for
 versions `0.X >=0.1.0`, and *no* updates for versions `0.0.X`.
@@ -360,9 +354,6 @@ strings that they parse.
   `v2` is greater.  Sorts in ascending order if passed to `Array.sort()`.
 * `rcompare(v1, v2)`: The reverse of compare.  Sorts an array of versions
   in descending order when passed to `Array.sort()`.
-* `compareBuild(v1, v2)`: The same as `compare` but considers `build` when two versions
-  are equal.  Sorts in ascending order if passed to `Array.sort()`.
-  `v2` is greater.  Sorts in ascending order if passed to `Array.sort()`.
 * `diff(v1, v2)`: Returns difference between two versions by the release type
   (`major`, `premajor`, `minor`, `preminor`, `patch`, `prepatch`, or `prerelease`),
   or null if the versions are the same.
@@ -405,7 +396,7 @@ range, use the `satisfies(version, range)` function.
 
 ### Coercion
 
-* `coerce(version, options)`: Coerces a string to semver if possible
+* `coerce(version)`: Coerces a string to semver if possible
 
 This aims to provide a very forgiving translation of a non-semver string to
 semver. It looks for the first digit in a string, and consumes all
@@ -417,27 +408,5 @@ surrounding text is simply ignored (`v3.4 replaces v3.3.1` becomes
 is not valid).  The maximum  length for any semver component considered for
 coercion is 16 characters; longer components will be ignored
 (`10000000000000000.4.7.4` becomes `4.7.4`).  The maximum value for any
-semver component is `Integer.MAX_SAFE_INTEGER || (2**53 - 1)`; higher value
+semver component is `Number.MAX_SAFE_INTEGER || (2**53 - 1)`; higher value
 components are invalid (`9999999999999999.4.7.4` is likely invalid).
-
-If the `options.rtl` flag is set, then `coerce` will return the right-most
-coercible tuple that does not share an ending index with a longer coercible
-tuple.  For example, `1.2.3.4` will return `2.3.4` in rtl mode, not
-`4.0.0`.  `1.2.3/4` will return `4.0.0`, because the `4` is not a part of
-any other overlapping SemVer tuple.
-
-### Clean
-
-* `clean(version)`: Clean a string to be a valid semver if possible
-
-This will return a cleaned and trimmed semver version. If the provided version is not valid a null will be returned. This does not work for ranges. 
-
-ex.
-* `s.clean(' = v 2.1.5foo')`: `null`
-* `s.clean(' = v 2.1.5foo', { loose: true })`: `'2.1.5-foo'`
-* `s.clean(' = v 2.1.5-foo')`: `null`
-* `s.clean(' = v 2.1.5-foo', { loose: true })`: `'2.1.5-foo'`
-* `s.clean('=v2.1.5')`: `'2.1.5'`
-* `s.clean('  =v2.1.5')`: `2.1.5`
-* `s.clean('      2.1.5   ')`: `'2.1.5'`
-* `s.clean('~1.0.0')`: `null`
diff --git a/SECURITY.md b/SECURITY.md
new file mode 100644
index 00000000..4fe06a2a
--- /dev/null
+++ b/SECURITY.md
@@ -0,0 +1,13 @@
+<!-- This file is automatically added by @npmcli/template-oss. Do not edit. -->
+
+GitHub takes the security of our software products and services seriously, including the open source code repositories managed through our GitHub organizations, such as [GitHub](https://github.com/GitHub).
+
+If you believe you have found a security vulnerability in this GitHub-owned open source repository, you can report it to us in one of two ways.
+
+If the vulnerability you have found is *not* [in scope for the GitHub Bug Bounty Program](https://bounty.github.com/#scope) or if you do not wish to be considered for a bounty reward, please report the issue to us directly through [opensource-security@github.com](mailto:opensource-security@github.com).
+
+If the vulnerability you have found is [in scope for the GitHub Bug Bounty Program](https://bounty.github.com/#scope) and you would like for your finding to be considered for a bounty reward, please submit the vulnerability to us through [HackerOne](https://hackerone.com/github) in order to be eligible to receive a bounty award.
+
+**Please do not report security vulnerabilities through public GitHub issues, discussions, or pull requests.**
+
+Thanks for helping make GitHub safe for everyone.
diff --git a/package-lock.json b/package-lock.json
deleted file mode 100644
index f86c7542..00000000
--- a/package-lock.json
+++ /dev/null
@@ -1,3575 +0,0 @@
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-            "strip-ansi": "^3.0.0"
-          }
-        },
-        "strip-ansi": {
-          "version": "3.0.1",
-          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
-          "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
-          "dev": true,
-          "requires": {
-            "ansi-regex": "^2.0.0"
-          }
-        }
-      }
-    },
-    "wrappy": {
-      "version": "1.0.2",
-      "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
-      "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=",
-      "dev": true
-    },
-    "write-file-atomic": {
-      "version": "3.0.0",
-      "resolved": "https://registry.npmjs.org/write-file-atomic/-/write-file-atomic-3.0.0.tgz",
-      "integrity": "sha512-EIgkf60l2oWsffja2Sf2AL384dx328c0B+cIYPTQq5q2rOYuDV00/iPFBOUiDKKwKMOhkymH8AidPaRvzfxY+Q==",
-      "dev": true,
-      "requires": {
-        "imurmurhash": "^0.1.4",
-        "is-typedarray": "^1.0.0",
-        "signal-exit": "^3.0.2",
-        "typedarray-to-buffer": "^3.1.5"
-      }
-    },
-    "y18n": {
-      "version": "4.0.0",
-      "resolved": "https://registry.npmjs.org/y18n/-/y18n-4.0.0.tgz",
-      "integrity": "sha512-r9S/ZyXu/Xu9q1tYlpsLIsa3EeLXXk0VwlxqTcFRfg9EhMW+17kbt9G0NrgCmhGb5vT2hyhJZLfDGx+7+5Uj/w==",
-      "dev": true
-    },
-    "yallist": {
-      "version": "2.1.2",
-      "resolved": "https://registry.npmjs.org/yallist/-/yallist-2.1.2.tgz",
-      "integrity": "sha1-HBH5IY8HYImkfdUS+TxmmaaoHVI=",
-      "dev": true
-    },
-    "yaml": {
-      "version": "1.6.0",
-      "resolved": "https://registry.npmjs.org/yaml/-/yaml-1.6.0.tgz",
-      "integrity": "sha512-iZfse3lwrJRoSlfs/9KQ9iIXxs9++RvBFVzAqbbBiFT+giYtyanevreF9r61ZTbGMgWQBxAua3FzJiniiJXWWw==",
-      "dev": true,
-      "requires": {
-        "@babel/runtime": "^7.4.5"
-      }
-    },
-    "yapool": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/yapool/-/yapool-1.0.0.tgz",
-      "integrity": "sha1-9pPymjFbUNmp2iZGp6ZkXJaYW2o=",
-      "dev": true
-    },
-    "yargs": {
-      "version": "13.2.4",
-      "resolved": "https://registry.npmjs.org/yargs/-/yargs-13.2.4.tgz",
-      "integrity": "sha512-HG/DWAJa1PAnHT9JAhNa8AbAv3FPaiLzioSjCcmuXXhP8MlpHO5vwls4g4j6n30Z74GVQj8Xa62dWVx1QCGklg==",
-      "dev": true,
-      "requires": {
-        "cliui": "^5.0.0",
-        "find-up": "^3.0.0",
-        "get-caller-file": "^2.0.1",
-        "os-locale": "^3.1.0",
-        "require-directory": "^2.1.1",
-        "require-main-filename": "^2.0.0",
-        "set-blocking": "^2.0.0",
-        "string-width": "^3.0.0",
-        "which-module": "^2.0.0",
-        "y18n": "^4.0.0",
-        "yargs-parser": "^13.1.0"
-      },
-      "dependencies": {
-        "ansi-regex": {
-          "version": "4.1.0",
-          "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-4.1.0.tgz",
-          "integrity": "sha512-1apePfXM1UOSqw0o9IiFAovVz9M5S1Dg+4TrDwfMewQ6p/rmMueb7tWZjQ1rx4Loy1ArBggoqGpfqqdI4rondg==",
-          "dev": true
-        },
-        "cliui": {
-          "version": "5.0.0",
-          "resolved": "https://registry.npmjs.org/cliui/-/cliui-5.0.0.tgz",
-          "integrity": "sha512-PYeGSEmmHM6zvoef2w8TPzlrnNpXIjTipYK780YswmIP9vjxmd6Y2a3CB2Ks6/AU8NHjZugXvo8w3oWM2qnwXA==",
-          "dev": true,
-          "requires": {
-            "string-width": "^3.1.0",
-            "strip-ansi": "^5.2.0",
-            "wrap-ansi": "^5.1.0"
-          }
-        },
-        "string-width": {
-          "version": "3.1.0",
-          "resolved": "https://registry.npmjs.org/string-width/-/string-width-3.1.0.tgz",
-          "integrity": "sha512-vafcv6KjVZKSgz06oM/H6GDBrAtz8vdhQakGjFIvNrHA6y3HCF1CInLy+QLq8dTJPQ1b+KDUqDFctkdRW44e1w==",
-          "dev": true,
-          "requires": {
-            "emoji-regex": "^7.0.1",
-            "is-fullwidth-code-point": "^2.0.0",
-            "strip-ansi": "^5.1.0"
-          }
-        },
-        "strip-ansi": {
-          "version": "5.2.0",
-          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-5.2.0.tgz",
-          "integrity": "sha512-DuRs1gKbBqsMKIZlrffwlug8MHkcnpjs5VPmL1PAh+mA30U0DTotfDZ0d2UUsXpPmPmMMJ6W773MaA3J+lbiWA==",
-          "dev": true,
-          "requires": {
-            "ansi-regex": "^4.1.0"
-          }
-        },
-        "wrap-ansi": {
-          "version": "5.1.0",
-          "resolved": "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-5.1.0.tgz",
-          "integrity": "sha512-QC1/iN/2/RPVJ5jYK8BGttj5z83LmSKmvbvrXPNCLZSEb32KKVDJDl/MOt2N01qU2H/FkzEa9PKto1BqDjtd7Q==",
-          "dev": true,
-          "requires": {
-            "ansi-styles": "^3.2.0",
-            "string-width": "^3.0.0",
-            "strip-ansi": "^5.0.0"
-          }
-        }
-      }
-    },
-    "yargs-parser": {
-      "version": "13.1.1",
-      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-13.1.1.tgz",
-      "integrity": "sha512-oVAVsHz6uFrg3XQheFII8ESO2ssAf9luWuAd6Wexsu4F3OtIW0o8IribPXYrD4WC24LWtPrJlGy87y5udK+dxQ==",
-      "dev": true,
-      "requires": {
-        "camelcase": "^5.0.0",
-        "decamelize": "^1.2.0"
-      }
-    },
-    "yn": {
-      "version": "3.1.0",
-      "resolved": "https://registry.npmjs.org/yn/-/yn-3.1.0.tgz",
-      "integrity": "sha512-kKfnnYkbTfrAdd0xICNFw7Atm8nKpLcLv9AZGEt+kczL/WQVai4e2V6ZN8U/O+iI6WrNuJjNNOyu4zfhl9D3Hg==",
-      "dev": true
-    }
-  }
-}
diff --git a/package.json b/package.json
index bdd442f5..193006bf 100644
--- a/package.json
+++ b/package.json
@@ -1,28 +1,37 @@
 {
   "name": "semver",
-  "version": "6.3.0",
+  "version": "5.7.2",
   "description": "The semantic version parser used by npm.",
   "main": "semver.js",
   "scripts": {
-    "test": "tap",
-    "preversion": "npm test",
-    "postversion": "npm publish",
-    "postpublish": "git push origin --follow-tags"
+    "test": "tap test/ --100 --timeout=30",
+    "lint": "echo linting disabled",
+    "postlint": "template-oss-check",
+    "template-oss-apply": "template-oss-apply --force",
+    "snap": "tap test/ --100 --timeout=30",
+    "posttest": "npm run lint"
   },
   "devDependencies": {
-    "tap": "^14.3.1"
+    "@npmcli/template-oss": "4.25.1",
+    "tap": "^12.7.0"
   },
   "license": "ISC",
-  "repository": "https://github.com/npm/node-semver",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/npm/node-semver.git"
+  },
   "bin": {
-    "semver": "./bin/semver.js"
+    "semver": "./bin/semver"
   },
   "files": [
     "bin",
     "range.bnf",
     "semver.js"
   ],
-  "tap": {
-    "check-coverage": true
+  "author": "GitHub Inc.",
+  "templateOSS": {
+    "//@npmcli/template-oss": "This file is partially managed by @npmcli/template-oss. Edits may be overwritten.",
+    "content": "./scripts/template-oss",
+    "version": "4.25.1"
   }
 }
diff --git a/release-please-config.json b/release-please-config.json
new file mode 100644
index 00000000..f6d68306
--- /dev/null
+++ b/release-please-config.json
@@ -0,0 +1,37 @@
+{
+  "group-pull-request-title-pattern": "chore: release ${version}",
+  "pull-request-title-pattern": "chore: release${component} ${version}",
+  "changelog-sections": [
+    {
+      "type": "feat",
+      "section": "Features",
+      "hidden": false
+    },
+    {
+      "type": "fix",
+      "section": "Bug Fixes",
+      "hidden": false
+    },
+    {
+      "type": "docs",
+      "section": "Documentation",
+      "hidden": false
+    },
+    {
+      "type": "deps",
+      "section": "Dependencies",
+      "hidden": false
+    },
+    {
+      "type": "chore",
+      "section": "Chores",
+      "hidden": true
+    }
+  ],
+  "prerelease-type": "pre.0",
+  "packages": {
+    ".": {
+      "package-name": ""
+    }
+  }
+}
diff --git a/scripts/template-oss/_step-deps-yml.hbs b/scripts/template-oss/_step-deps-yml.hbs
new file mode 100644
index 00000000..a4df76bc
--- /dev/null
+++ b/scripts/template-oss/_step-deps-yml.hbs
@@ -0,0 +1,8 @@
+- name: Remove Template-OSS
+  if: matrix && matrix.node-version == '{{ oldNode }}'
+  run: |
+    # template-oss cannot be installed on older npms because there are transient deps
+    # that use "npm:" aliases which are not supported
+    jq 'del(.devDependencies["@npmcli/template-oss"])' package.json > package.json-update
+    mv package.json-update package.json
+{{> defaultStepDepsYml }}
diff --git a/scripts/template-oss/index.js b/scripts/template-oss/index.js
new file mode 100644
index 00000000..2f8d8483
--- /dev/null
+++ b/scripts/template-oss/index.js
@@ -0,0 +1,32 @@
+// 6 was selected as an arbitrarily old version of Node to test in. This
+// version of semver has no engines so this version of Node is a best effort
+// to ensure no syntax is introduced that would break older Node versions.
+// Problems found in even older versions of Node:
+// - Node 4: RTL tests were not passing
+// - Node 0.12: Necessary version of tap doesnt run
+const OLD_NODE = '6.17.1'
+
+module.exports = {
+  windowsCI: false,
+  macCI: false,
+  updateNpm: false,
+  eslint: false,
+  dependabot: false,
+  oldNode: OLD_NODE,
+  ciVersions: [OLD_NODE],
+  latestCiVersion: 20,
+  backport: 6,
+  publish: true,
+  allowPaths: [
+    '/range.bnf',
+    '/semver.js',
+  ],
+  rootModule: {
+    add: {
+      'package.json': {
+        file: './package-json.hbs',
+        overwrite: false
+      }
+    }
+  }
+}
diff --git a/scripts/template-oss/package-json.hbs b/scripts/template-oss/package-json.hbs
new file mode 100644
index 00000000..d72b8823
--- /dev/null
+++ b/scripts/template-oss/package-json.hbs
@@ -0,0 +1,13 @@
+{
+  "files": [
+    "bin",
+    "range.bnf",
+    "semver.js"
+  ],
+  "scripts": {
+    "test": "tap test/ --100 --timeout=30",
+    "snap": "tap test/ --100 --timeout=30"
+  },
+  "tap": {{{ del }}},
+  "engines": {{{ del }}}
+}
diff --git a/semver.js b/semver.js
index 636fa436..dcb68334 100644
--- a/semver.js
+++ b/semver.js
@@ -26,14 +26,37 @@ var MAX_SAFE_INTEGER = Number.MAX_SAFE_INTEGER ||
 // Max safe segment length for coercion.
 var MAX_SAFE_COMPONENT_LENGTH = 16
 
+var MAX_SAFE_BUILD_LENGTH = MAX_LENGTH - 6
+
 // The actual regexps go on exports.re
 var re = exports.re = []
+var safeRe = exports.safeRe = []
 var src = exports.src = []
-var t = exports.tokens = {}
 var R = 0
 
-function tok (n) {
-  t[n] = R++
+var LETTERDASHNUMBER = '[a-zA-Z0-9-]'
+
+// Replace some greedy regex tokens to prevent regex dos issues. These regex are
+// used internally via the safeRe object since all inputs in this library get
+// normalized first to trim and collapse all extra whitespace. The original
+// regexes are exported for userland consumption and lower level usage. A
+// future breaking change could export the safer regex only with a note that
+// all input should have extra whitespace removed.
+var safeRegexReplacements = [
+  ['\\s', 1],
+  ['\\d', MAX_LENGTH],
+  [LETTERDASHNUMBER, MAX_SAFE_BUILD_LENGTH],
+]
+
+function makeSafeRe (value) {
+  for (var i = 0; i < safeRegexReplacements.length; i++) {
+    var token = safeRegexReplacements[i][0]
+    var max = safeRegexReplacements[i][1]
+    value = value
+      .split(token + '*').join(token + '{0,' + max + '}')
+      .split(token + '+').join(token + '{1,' + max + '}')
+  }
+  return value
 }
 
 // The following Regular Expressions can be used for tokenizing,
@@ -42,67 +65,67 @@ function tok (n) {
 // ## Numeric Identifier
 // A single `0`, or a non-zero digit followed by zero or more digits.
 
-tok('NUMERICIDENTIFIER')
-src[t.NUMERICIDENTIFIER] = '0|[1-9]\\d*'
-tok('NUMERICIDENTIFIERLOOSE')
-src[t.NUMERICIDENTIFIERLOOSE] = '[0-9]+'
+var NUMERICIDENTIFIER = R++
+src[NUMERICIDENTIFIER] = '0|[1-9]\\d*'
+var NUMERICIDENTIFIERLOOSE = R++
+src[NUMERICIDENTIFIERLOOSE] = '\\d+'
 
 // ## Non-numeric Identifier
 // Zero or more digits, followed by a letter or hyphen, and then zero or
 // more letters, digits, or hyphens.
 
-tok('NONNUMERICIDENTIFIER')
-src[t.NONNUMERICIDENTIFIER] = '\\d*[a-zA-Z-][a-zA-Z0-9-]*'
+var NONNUMERICIDENTIFIER = R++
+src[NONNUMERICIDENTIFIER] = '\\d*[a-zA-Z-]' + LETTERDASHNUMBER + '*'
 
 // ## Main Version
 // Three dot-separated numeric identifiers.
 
-tok('MAINVERSION')
-src[t.MAINVERSION] = '(' + src[t.NUMERICIDENTIFIER] + ')\\.' +
-                   '(' + src[t.NUMERICIDENTIFIER] + ')\\.' +
-                   '(' + src[t.NUMERICIDENTIFIER] + ')'
+var MAINVERSION = R++
+src[MAINVERSION] = '(' + src[NUMERICIDENTIFIER] + ')\\.' +
+                   '(' + src[NUMERICIDENTIFIER] + ')\\.' +
+                   '(' + src[NUMERICIDENTIFIER] + ')'
 
-tok('MAINVERSIONLOOSE')
-src[t.MAINVERSIONLOOSE] = '(' + src[t.NUMERICIDENTIFIERLOOSE] + ')\\.' +
-                        '(' + src[t.NUMERICIDENTIFIERLOOSE] + ')\\.' +
-                        '(' + src[t.NUMERICIDENTIFIERLOOSE] + ')'
+var MAINVERSIONLOOSE = R++
+src[MAINVERSIONLOOSE] = '(' + src[NUMERICIDENTIFIERLOOSE] + ')\\.' +
+                        '(' + src[NUMERICIDENTIFIERLOOSE] + ')\\.' +
+                        '(' + src[NUMERICIDENTIFIERLOOSE] + ')'
 
 // ## Pre-release Version Identifier
 // A numeric identifier, or a non-numeric identifier.
 
-tok('PRERELEASEIDENTIFIER')
-src[t.PRERELEASEIDENTIFIER] = '(?:' + src[t.NUMERICIDENTIFIER] +
-                            '|' + src[t.NONNUMERICIDENTIFIER] + ')'
+var PRERELEASEIDENTIFIER = R++
+src[PRERELEASEIDENTIFIER] = '(?:' + src[NUMERICIDENTIFIER] +
+                            '|' + src[NONNUMERICIDENTIFIER] + ')'
 
-tok('PRERELEASEIDENTIFIERLOOSE')
-src[t.PRERELEASEIDENTIFIERLOOSE] = '(?:' + src[t.NUMERICIDENTIFIERLOOSE] +
-                                 '|' + src[t.NONNUMERICIDENTIFIER] + ')'
+var PRERELEASEIDENTIFIERLOOSE = R++
+src[PRERELEASEIDENTIFIERLOOSE] = '(?:' + src[NUMERICIDENTIFIERLOOSE] +
+                                 '|' + src[NONNUMERICIDENTIFIER] + ')'
 
 // ## Pre-release Version
 // Hyphen, followed by one or more dot-separated pre-release version
 // identifiers.
 
-tok('PRERELEASE')
-src[t.PRERELEASE] = '(?:-(' + src[t.PRERELEASEIDENTIFIER] +
-                  '(?:\\.' + src[t.PRERELEASEIDENTIFIER] + ')*))'
+var PRERELEASE = R++
+src[PRERELEASE] = '(?:-(' + src[PRERELEASEIDENTIFIER] +
+                  '(?:\\.' + src[PRERELEASEIDENTIFIER] + ')*))'
 
-tok('PRERELEASELOOSE')
-src[t.PRERELEASELOOSE] = '(?:-?(' + src[t.PRERELEASEIDENTIFIERLOOSE] +
-                       '(?:\\.' + src[t.PRERELEASEIDENTIFIERLOOSE] + ')*))'
+var PRERELEASELOOSE = R++
+src[PRERELEASELOOSE] = '(?:-?(' + src[PRERELEASEIDENTIFIERLOOSE] +
+                       '(?:\\.' + src[PRERELEASEIDENTIFIERLOOSE] + ')*))'
 
 // ## Build Metadata Identifier
 // Any combination of digits, letters, or hyphens.
 
-tok('BUILDIDENTIFIER')
-src[t.BUILDIDENTIFIER] = '[0-9A-Za-z-]+'
+var BUILDIDENTIFIER = R++
+src[BUILDIDENTIFIER] = LETTERDASHNUMBER + '+'
 
 // ## Build Metadata
 // Plus sign, followed by one or more period-separated build metadata
 // identifiers.
 
-tok('BUILD')
-src[t.BUILD] = '(?:\\+(' + src[t.BUILDIDENTIFIER] +
-             '(?:\\.' + src[t.BUILDIDENTIFIER] + ')*))'
+var BUILD = R++
+src[BUILD] = '(?:\\+(' + src[BUILDIDENTIFIER] +
+             '(?:\\.' + src[BUILDIDENTIFIER] + ')*))'
 
 // ## Full Version String
 // A main version, followed optionally by a pre-release version and
@@ -113,133 +136,132 @@ src[t.BUILD] = '(?:\\+(' + src[t.BUILDIDENTIFIER] +
 // capturing group, because it should not ever be used in version
 // comparison.
 
-tok('FULL')
-tok('FULLPLAIN')
-src[t.FULLPLAIN] = 'v?' + src[t.MAINVERSION] +
-                  src[t.PRERELEASE] + '?' +
-                  src[t.BUILD] + '?'
+var FULL = R++
+var FULLPLAIN = 'v?' + src[MAINVERSION] +
+                src[PRERELEASE] + '?' +
+                src[BUILD] + '?'
 
-src[t.FULL] = '^' + src[t.FULLPLAIN] + '$'
+src[FULL] = '^' + FULLPLAIN + '$'
 
 // like full, but allows v1.2.3 and =1.2.3, which people do sometimes.
 // also, 1.0.0alpha1 (prerelease without the hyphen) which is pretty
 // common in the npm registry.
-tok('LOOSEPLAIN')
-src[t.LOOSEPLAIN] = '[v=\\s]*' + src[t.MAINVERSIONLOOSE] +
-                  src[t.PRERELEASELOOSE] + '?' +
-                  src[t.BUILD] + '?'
+var LOOSEPLAIN = '[v=\\s]*' + src[MAINVERSIONLOOSE] +
+                 src[PRERELEASELOOSE] + '?' +
+                 src[BUILD] + '?'
 
-tok('LOOSE')
-src[t.LOOSE] = '^' + src[t.LOOSEPLAIN] + '$'
+var LOOSE = R++
+src[LOOSE] = '^' + LOOSEPLAIN + '$'
 
-tok('GTLT')
-src[t.GTLT] = '((?:<|>)?=?)'
+var GTLT = R++
+src[GTLT] = '((?:<|>)?=?)'
 
 // Something like "2.*" or "1.2.x".
 // Note that "x.x" is a valid xRange identifer, meaning "any version"
 // Only the first item is strictly required.
-tok('XRANGEIDENTIFIERLOOSE')
-src[t.XRANGEIDENTIFIERLOOSE] = src[t.NUMERICIDENTIFIERLOOSE] + '|x|X|\\*'
-tok('XRANGEIDENTIFIER')
-src[t.XRANGEIDENTIFIER] = src[t.NUMERICIDENTIFIER] + '|x|X|\\*'
-
-tok('XRANGEPLAIN')
-src[t.XRANGEPLAIN] = '[v=\\s]*(' + src[t.XRANGEIDENTIFIER] + ')' +
-                   '(?:\\.(' + src[t.XRANGEIDENTIFIER] + ')' +
-                   '(?:\\.(' + src[t.XRANGEIDENTIFIER] + ')' +
-                   '(?:' + src[t.PRERELEASE] + ')?' +
-                   src[t.BUILD] + '?' +
+var XRANGEIDENTIFIERLOOSE = R++
+src[XRANGEIDENTIFIERLOOSE] = src[NUMERICIDENTIFIERLOOSE] + '|x|X|\\*'
+var XRANGEIDENTIFIER = R++
+src[XRANGEIDENTIFIER] = src[NUMERICIDENTIFIER] + '|x|X|\\*'
+
+var XRANGEPLAIN = R++
+src[XRANGEPLAIN] = '[v=\\s]*(' + src[XRANGEIDENTIFIER] + ')' +
+                   '(?:\\.(' + src[XRANGEIDENTIFIER] + ')' +
+                   '(?:\\.(' + src[XRANGEIDENTIFIER] + ')' +
+                   '(?:' + src[PRERELEASE] + ')?' +
+                   src[BUILD] + '?' +
                    ')?)?'
 
-tok('XRANGEPLAINLOOSE')
-src[t.XRANGEPLAINLOOSE] = '[v=\\s]*(' + src[t.XRANGEIDENTIFIERLOOSE] + ')' +
-                        '(?:\\.(' + src[t.XRANGEIDENTIFIERLOOSE] + ')' +
-                        '(?:\\.(' + src[t.XRANGEIDENTIFIERLOOSE] + ')' +
-                        '(?:' + src[t.PRERELEASELOOSE] + ')?' +
-                        src[t.BUILD] + '?' +
+var XRANGEPLAINLOOSE = R++
+src[XRANGEPLAINLOOSE] = '[v=\\s]*(' + src[XRANGEIDENTIFIERLOOSE] + ')' +
+                        '(?:\\.(' + src[XRANGEIDENTIFIERLOOSE] + ')' +
+                        '(?:\\.(' + src[XRANGEIDENTIFIERLOOSE] + ')' +
+                        '(?:' + src[PRERELEASELOOSE] + ')?' +
+                        src[BUILD] + '?' +
                         ')?)?'
 
-tok('XRANGE')
-src[t.XRANGE] = '^' + src[t.GTLT] + '\\s*' + src[t.XRANGEPLAIN] + '$'
-tok('XRANGELOOSE')
-src[t.XRANGELOOSE] = '^' + src[t.GTLT] + '\\s*' + src[t.XRANGEPLAINLOOSE] + '$'
+var XRANGE = R++
+src[XRANGE] = '^' + src[GTLT] + '\\s*' + src[XRANGEPLAIN] + '$'
+var XRANGELOOSE = R++
+src[XRANGELOOSE] = '^' + src[GTLT] + '\\s*' + src[XRANGEPLAINLOOSE] + '$'
 
 // Coercion.
 // Extract anything that could conceivably be a part of a valid semver
-tok('COERCE')
-src[t.COERCE] = '(^|[^\\d])' +
+var COERCE = R++
+src[COERCE] = '(?:^|[^\\d])' +
               '(\\d{1,' + MAX_SAFE_COMPONENT_LENGTH + '})' +
               '(?:\\.(\\d{1,' + MAX_SAFE_COMPONENT_LENGTH + '}))?' +
               '(?:\\.(\\d{1,' + MAX_SAFE_COMPONENT_LENGTH + '}))?' +
               '(?:$|[^\\d])'
-tok('COERCERTL')
-re[t.COERCERTL] = new RegExp(src[t.COERCE], 'g')
 
 // Tilde ranges.
 // Meaning is "reasonably at or greater than"
-tok('LONETILDE')
-src[t.LONETILDE] = '(?:~>?)'
+var LONETILDE = R++
+src[LONETILDE] = '(?:~>?)'
 
-tok('TILDETRIM')
-src[t.TILDETRIM] = '(\\s*)' + src[t.LONETILDE] + '\\s+'
-re[t.TILDETRIM] = new RegExp(src[t.TILDETRIM], 'g')
+var TILDETRIM = R++
+src[TILDETRIM] = '(\\s*)' + src[LONETILDE] + '\\s+'
+re[TILDETRIM] = new RegExp(src[TILDETRIM], 'g')
+safeRe[TILDETRIM] = new RegExp(makeSafeRe(src[TILDETRIM]), 'g')
 var tildeTrimReplace = '$1~'
 
-tok('TILDE')
-src[t.TILDE] = '^' + src[t.LONETILDE] + src[t.XRANGEPLAIN] + '$'
-tok('TILDELOOSE')
-src[t.TILDELOOSE] = '^' + src[t.LONETILDE] + src[t.XRANGEPLAINLOOSE] + '$'
+var TILDE = R++
+src[TILDE] = '^' + src[LONETILDE] + src[XRANGEPLAIN] + '$'
+var TILDELOOSE = R++
+src[TILDELOOSE] = '^' + src[LONETILDE] + src[XRANGEPLAINLOOSE] + '$'
 
 // Caret ranges.
 // Meaning is "at least and backwards compatible with"
-tok('LONECARET')
-src[t.LONECARET] = '(?:\\^)'
+var LONECARET = R++
+src[LONECARET] = '(?:\\^)'
 
-tok('CARETTRIM')
-src[t.CARETTRIM] = '(\\s*)' + src[t.LONECARET] + '\\s+'
-re[t.CARETTRIM] = new RegExp(src[t.CARETTRIM], 'g')
+var CARETTRIM = R++
+src[CARETTRIM] = '(\\s*)' + src[LONECARET] + '\\s+'
+re[CARETTRIM] = new RegExp(src[CARETTRIM], 'g')
+safeRe[CARETTRIM] = new RegExp(makeSafeRe(src[CARETTRIM]), 'g')
 var caretTrimReplace = '$1^'
 
-tok('CARET')
-src[t.CARET] = '^' + src[t.LONECARET] + src[t.XRANGEPLAIN] + '$'
-tok('CARETLOOSE')
-src[t.CARETLOOSE] = '^' + src[t.LONECARET] + src[t.XRANGEPLAINLOOSE] + '$'
+var CARET = R++
+src[CARET] = '^' + src[LONECARET] + src[XRANGEPLAIN] + '$'
+var CARETLOOSE = R++
+src[CARETLOOSE] = '^' + src[LONECARET] + src[XRANGEPLAINLOOSE] + '$'
 
 // A simple gt/lt/eq thing, or just "" to indicate "any version"
-tok('COMPARATORLOOSE')
-src[t.COMPARATORLOOSE] = '^' + src[t.GTLT] + '\\s*(' + src[t.LOOSEPLAIN] + ')$|^$'
-tok('COMPARATOR')
-src[t.COMPARATOR] = '^' + src[t.GTLT] + '\\s*(' + src[t.FULLPLAIN] + ')$|^$'
+var COMPARATORLOOSE = R++
+src[COMPARATORLOOSE] = '^' + src[GTLT] + '\\s*(' + LOOSEPLAIN + ')$|^$'
+var COMPARATOR = R++
+src[COMPARATOR] = '^' + src[GTLT] + '\\s*(' + FULLPLAIN + ')$|^$'
 
 // An expression to strip any whitespace between the gtlt and the thing
 // it modifies, so that `> 1.2.3` ==> `>1.2.3`
-tok('COMPARATORTRIM')
-src[t.COMPARATORTRIM] = '(\\s*)' + src[t.GTLT] +
-                      '\\s*(' + src[t.LOOSEPLAIN] + '|' + src[t.XRANGEPLAIN] + ')'
+var COMPARATORTRIM = R++
+src[COMPARATORTRIM] = '(\\s*)' + src[GTLT] +
+                      '\\s*(' + LOOSEPLAIN + '|' + src[XRANGEPLAIN] + ')'
 
 // this one has to use the /g flag
-re[t.COMPARATORTRIM] = new RegExp(src[t.COMPARATORTRIM], 'g')
+re[COMPARATORTRIM] = new RegExp(src[COMPARATORTRIM], 'g')
+safeRe[COMPARATORTRIM] = new RegExp(makeSafeRe(src[COMPARATORTRIM]), 'g')
 var comparatorTrimReplace = '$1$2$3'
 
 // Something like `1.2.3 - 1.2.4`
 // Note that these all use the loose form, because they'll be
 // checked against either the strict or loose comparator form
 // later.
-tok('HYPHENRANGE')
-src[t.HYPHENRANGE] = '^\\s*(' + src[t.XRANGEPLAIN] + ')' +
+var HYPHENRANGE = R++
+src[HYPHENRANGE] = '^\\s*(' + src[XRANGEPLAIN] + ')' +
                    '\\s+-\\s+' +
-                   '(' + src[t.XRANGEPLAIN] + ')' +
+                   '(' + src[XRANGEPLAIN] + ')' +
                    '\\s*$'
 
-tok('HYPHENRANGELOOSE')
-src[t.HYPHENRANGELOOSE] = '^\\s*(' + src[t.XRANGEPLAINLOOSE] + ')' +
+var HYPHENRANGELOOSE = R++
+src[HYPHENRANGELOOSE] = '^\\s*(' + src[XRANGEPLAINLOOSE] + ')' +
                         '\\s+-\\s+' +
-                        '(' + src[t.XRANGEPLAINLOOSE] + ')' +
+                        '(' + src[XRANGEPLAINLOOSE] + ')' +
                         '\\s*$'
 
 // Star ranges basically just allow anything at all.
-tok('STAR')
-src[t.STAR] = '(<|>)?=?\\s*\\*'
+var STAR = R++
+src[STAR] = '(<|>)?=?\\s*\\*'
 
 // Compile to actual regexp objects.
 // All are flag-free, unless they were created above with a flag.
@@ -247,6 +269,14 @@ for (var i = 0; i < R; i++) {
   debug(i, src[i])
   if (!re[i]) {
     re[i] = new RegExp(src[i])
+
+    // Replace all greedy whitespace to prevent regex dos issues. These regex are
+    // used internally via the safeRe object since all inputs in this library get
+    // normalized first to trim and collapse all extra whitespace. The original
+    // regexes are exported for userland consumption and lower level usage. A
+    // future breaking change could export the safer regex only with a note that
+    // all input should have extra whitespace removed.
+    safeRe[i] = new RegExp(makeSafeRe(src[i]))
   }
 }
 
@@ -271,7 +301,7 @@ function parse (version, options) {
     return null
   }
 
-  var r = options.loose ? re[t.LOOSE] : re[t.FULL]
+  var r = options.loose ? safeRe[LOOSE] : safeRe[FULL]
   if (!r.test(version)) {
     return null
   }
@@ -326,7 +356,7 @@ function SemVer (version, options) {
   this.options = options
   this.loose = !!options.loose
 
-  var m = version.trim().match(options.loose ? re[t.LOOSE] : re[t.FULL])
+  var m = version.trim().match(options.loose ? safeRe[LOOSE] : safeRe[FULL])
 
   if (!m) {
     throw new TypeError('Invalid Version: ' + version)
@@ -434,30 +464,6 @@ SemVer.prototype.comparePre = function (other) {
   } while (++i)
 }
 
-SemVer.prototype.compareBuild = function (other) {
-  if (!(other instanceof SemVer)) {
-    other = new SemVer(other, this.options)
-  }
-
-  var i = 0
-  do {
-    var a = this.build[i]
-    var b = other.build[i]
-    debug('prerelease compare', i, a, b)
-    if (a === undefined && b === undefined) {
-      return 0
-    } else if (b === undefined) {
-      return 1
-    } else if (a === undefined) {
-      return -1
-    } else if (a === b) {
-      continue
-    } else {
-      return compareIdentifiers(a, b)
-    }
-  } while (++i)
-}
-
 // preminor will bump the version up to the next minor release, and immediately
 // down to pre-release. premajor and prepatch work the same way.
 SemVer.prototype.inc = function (release, identifier) {
@@ -652,13 +658,6 @@ function compareLoose (a, b) {
   return compare(a, b, true)
 }
 
-exports.compareBuild = compareBuild
-function compareBuild (a, b, loose) {
-  var versionA = new SemVer(a, loose)
-  var versionB = new SemVer(b, loose)
-  return versionA.compare(versionB) || versionA.compareBuild(versionB)
-}
-
 exports.rcompare = rcompare
 function rcompare (a, b, loose) {
   return compare(b, a, loose)
@@ -667,14 +666,14 @@ function rcompare (a, b, loose) {
 exports.sort = sort
 function sort (list, loose) {
   return list.sort(function (a, b) {
-    return exports.compareBuild(a, b, loose)
+    return exports.compare(a, b, loose)
   })
 }
 
 exports.rsort = rsort
 function rsort (list, loose) {
   return list.sort(function (a, b) {
-    return exports.compareBuild(b, a, loose)
+    return exports.rcompare(a, b, loose)
   })
 }
 
@@ -771,6 +770,7 @@ function Comparator (comp, options) {
     return new Comparator(comp, options)
   }
 
+  comp = comp.trim().split(/\s+/).join(' ')
   debug('comparator', comp, options)
   this.options = options
   this.loose = !!options.loose
@@ -787,14 +787,14 @@ function Comparator (comp, options) {
 
 var ANY = {}
 Comparator.prototype.parse = function (comp) {
-  var r = this.options.loose ? re[t.COMPARATORLOOSE] : re[t.COMPARATOR]
+  var r = this.options.loose ? safeRe[COMPARATORLOOSE] : safeRe[COMPARATOR]
   var m = comp.match(r)
 
   if (!m) {
     throw new TypeError('Invalid comparator: ' + comp)
   }
 
-  this.operator = m[1] !== undefined ? m[1] : ''
+  this.operator = m[1]
   if (this.operator === '=') {
     this.operator = ''
   }
@@ -814,16 +814,12 @@ Comparator.prototype.toString = function () {
 Comparator.prototype.test = function (version) {
   debug('Comparator.test', version, this.options.loose)
 
-  if (this.semver === ANY || version === ANY) {
+  if (this.semver === ANY) {
     return true
   }
 
   if (typeof version === 'string') {
-    try {
-      version = new SemVer(version, this.options)
-    } catch (er) {
-      return false
-    }
+    version = new SemVer(version, this.options)
   }
 
   return cmp(version, this.operator, this.semver, this.options)
@@ -844,15 +840,9 @@ Comparator.prototype.intersects = function (comp, options) {
   var rangeTmp
 
   if (this.operator === '') {
-    if (this.value === '') {
-      return true
-    }
     rangeTmp = new Range(comp.value, options)
     return satisfies(this.value, rangeTmp, options)
   } else if (comp.operator === '') {
-    if (comp.value === '') {
-      return true
-    }
     rangeTmp = new Range(this.value, options)
     return satisfies(comp.semver, rangeTmp, options)
   }
@@ -911,9 +901,16 @@ function Range (range, options) {
   this.loose = !!options.loose
   this.includePrerelease = !!options.includePrerelease
 
-  // First, split based on boolean or ||
+  // First reduce all whitespace as much as possible so we do not have to rely
+  // on potentially slow regexes like \s*. This is then stored and used for
+  // future error messages as well.
   this.raw = range
-  this.set = range.split(/\s*\|\|\s*/).map(function (range) {
+    .trim()
+    .split(/\s+/)
+    .join(' ')
+
+  // First, split based on boolean or ||
+  this.set = this.raw.split('||').map(function (range) {
     return this.parseRange(range.trim())
   }, this).filter(function (c) {
     // throw out any that are not relevant for whatever reason
@@ -921,7 +918,7 @@ function Range (range, options) {
   })
 
   if (!this.set.length) {
-    throw new TypeError('Invalid SemVer Range: ' + range)
+    throw new TypeError('Invalid SemVer Range: ' + this.raw)
   }
 
   this.format()
@@ -940,28 +937,23 @@ Range.prototype.toString = function () {
 
 Range.prototype.parseRange = function (range) {
   var loose = this.options.loose
-  range = range.trim()
   // `1.2.3 - 1.2.4` => `>=1.2.3 <=1.2.4`
-  var hr = loose ? re[t.HYPHENRANGELOOSE] : re[t.HYPHENRANGE]
+  var hr = loose ? safeRe[HYPHENRANGELOOSE] : safeRe[HYPHENRANGE]
   range = range.replace(hr, hyphenReplace)
   debug('hyphen replace', range)
   // `> 1.2.3 < 1.2.5` => `>1.2.3 <1.2.5`
-  range = range.replace(re[t.COMPARATORTRIM], comparatorTrimReplace)
-  debug('comparator trim', range, re[t.COMPARATORTRIM])
+  range = range.replace(safeRe[COMPARATORTRIM], comparatorTrimReplace)
+  debug('comparator trim', range, safeRe[COMPARATORTRIM])
 
   // `~ 1.2.3` => `~1.2.3`
-  range = range.replace(re[t.TILDETRIM], tildeTrimReplace)
+  range = range.replace(safeRe[TILDETRIM], tildeTrimReplace)
 
   // `^ 1.2.3` => `^1.2.3`
-  range = range.replace(re[t.CARETTRIM], caretTrimReplace)
-
-  // normalize spaces
-  range = range.split(/\s+/).join(' ')
+  range = range.replace(safeRe[CARETTRIM], caretTrimReplace)
 
   // At this point, the range is completely trimmed and
   // ready to be split into comparators.
-
-  var compRe = loose ? re[t.COMPARATORLOOSE] : re[t.COMPARATOR]
+  var compRe = loose ? safeRe[COMPARATORLOOSE] : safeRe[COMPARATOR]
   var set = range.split(' ').map(function (comp) {
     return parseComparator(comp, this.options)
   }, this).join(' ').split(/\s+/)
@@ -984,38 +976,14 @@ Range.prototype.intersects = function (range, options) {
   }
 
   return this.set.some(function (thisComparators) {
-    return (
-      isSatisfiable(thisComparators, options) &&
-      range.set.some(function (rangeComparators) {
-        return (
-          isSatisfiable(rangeComparators, options) &&
-          thisComparators.every(function (thisComparator) {
-            return rangeComparators.every(function (rangeComparator) {
-              return thisComparator.intersects(rangeComparator, options)
-            })
-          })
-        )
+    return thisComparators.every(function (thisComparator) {
+      return range.set.some(function (rangeComparators) {
+        return rangeComparators.every(function (rangeComparator) {
+          return thisComparator.intersects(rangeComparator, options)
+        })
       })
-    )
-  })
-}
-
-// take a set of comparators and determine whether there
-// exists a version which can satisfy it
-function isSatisfiable (comparators, options) {
-  var result = true
-  var remainingComparators = comparators.slice()
-  var testComparator = remainingComparators.pop()
-
-  while (result && remainingComparators.length) {
-    result = remainingComparators.every(function (otherComparator) {
-      return testComparator.intersects(otherComparator, options)
     })
-
-    testComparator = remainingComparators.pop()
-  }
-
-  return result
+  })
 }
 
 // Mostly just for testing and legacy API reasons
@@ -1061,7 +1029,7 @@ function replaceTildes (comp, options) {
 }
 
 function replaceTilde (comp, options) {
-  var r = options.loose ? re[t.TILDELOOSE] : re[t.TILDE]
+  var r = options.loose ? safeRe[TILDELOOSE] : safeRe[TILDE]
   return comp.replace(r, function (_, M, m, p, pr) {
     debug('tilde', comp, _, M, m, p, pr)
     var ret
@@ -1102,7 +1070,7 @@ function replaceCarets (comp, options) {
 
 function replaceCaret (comp, options) {
   debug('caret', comp, options)
-  var r = options.loose ? re[t.CARETLOOSE] : re[t.CARET]
+  var r = options.loose ? safeRe[CARETLOOSE] : safeRe[CARET]
   return comp.replace(r, function (_, M, m, p, pr) {
     debug('caret', comp, _, M, m, p, pr)
     var ret
@@ -1161,7 +1129,7 @@ function replaceXRanges (comp, options) {
 
 function replaceXRange (comp, options) {
   comp = comp.trim()
-  var r = options.loose ? re[t.XRANGELOOSE] : re[t.XRANGE]
+  var r = options.loose ? safeRe[XRANGELOOSE] : safeRe[XRANGE]
   return comp.replace(r, function (ret, gtlt, M, m, p, pr) {
     debug('xRange', comp, ret, gtlt, M, m, p, pr)
     var xM = isX(M)
@@ -1173,14 +1141,10 @@ function replaceXRange (comp, options) {
       gtlt = ''
     }
 
-    // if we're including prereleases in the match, then we need
-    // to fix this to -0, the lowest possible prerelease value
-    pr = options.includePrerelease ? '-0' : ''
-
     if (xM) {
       if (gtlt === '>' || gtlt === '<') {
         // nothing is allowed
-        ret = '<0.0.0-0'
+        ret = '<0.0.0'
       } else {
         // nothing is forbidden
         ret = '*'
@@ -1217,12 +1181,11 @@ function replaceXRange (comp, options) {
         }
       }
 
-      ret = gtlt + M + '.' + m + '.' + p + pr
+      ret = gtlt + M + '.' + m + '.' + p
     } else if (xm) {
-      ret = '>=' + M + '.0.0' + pr + ' <' + (+M + 1) + '.0.0' + pr
+      ret = '>=' + M + '.0.0 <' + (+M + 1) + '.0.0'
     } else if (xp) {
-      ret = '>=' + M + '.' + m + '.0' + pr +
-        ' <' + M + '.' + (+m + 1) + '.0' + pr
+      ret = '>=' + M + '.' + m + '.0 <' + M + '.' + (+m + 1) + '.0'
     }
 
     debug('xRange return', ret)
@@ -1236,10 +1199,10 @@ function replaceXRange (comp, options) {
 function replaceStars (comp, options) {
   debug('replaceStars', comp, options)
   // Looseness is ignored here.  star is always as loose as it gets!
-  return comp.trim().replace(re[t.STAR], '')
+  return comp.trim().replace(safeRe[STAR], '')
 }
 
-// This function is passed to string.replace(re[t.HYPHENRANGE])
+// This function is passed to string.replace(safeRe[HYPHENRANGE])
 // M, m, patch, prerelease, build
 // 1.2 - 3.4.5 => >=1.2.0 <=3.4.5
 // 1.2.3 - 3.4 => >=1.2.0 <3.5.0 Any 3.4.x will do
@@ -1279,11 +1242,7 @@ Range.prototype.test = function (version) {
   }
 
   if (typeof version === 'string') {
-    try {
-      version = new SemVer(version, this.options)
-    } catch (er) {
-      return false
-    }
+    version = new SemVer(version, this.options)
   }
 
   for (var i = 0; i < this.set.length; i++) {
@@ -1545,52 +1504,22 @@ function intersects (r1, r2, options) {
 }
 
 exports.coerce = coerce
-function coerce (version, options) {
+function coerce (version) {
   if (version instanceof SemVer) {
     return version
   }
 
-  if (typeof version === 'number') {
-    version = String(version)
-  }
-
   if (typeof version !== 'string') {
     return null
   }
 
-  options = options || {}
-
-  var match = null
-  if (!options.rtl) {
-    match = version.match(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'
-    //
-    // 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.
-    var next
-    while ((next = re[t.COERCERTL].exec(version)) &&
-      (!match || match.index + match[0].length !== version.length)
-    ) {
-      if (!match ||
-          next.index + next[0].length !== match.index + match[0].length) {
-        match = next
-      }
-      re[t.COERCERTL].lastIndex = next.index + next[1].length + next[2].length
-    }
-    // leave it in a clean state
-    re[t.COERCERTL].lastIndex = -1
-  }
+  var match = version.match(safeRe[COERCE])
 
-  if (match === null) {
+  if (match == null) {
     return null
   }
 
-  return parse(match[2] +
-    '.' + (match[3] || '0') +
-    '.' + (match[4] || '0'), options)
+  return parse(match[1] +
+    '.' + (match[2] || '0') +
+    '.' + (match[3] || '0'))
 }
diff --git a/test/cli.js b/test/cli.js
index 0f273db0..fa3456dc 100644
--- a/test/cli.js
+++ b/test/cli.js
@@ -2,7 +2,19 @@
 var t = require('tap')
 
 const thisVersion = require('../package.json').version
-t.cleanSnapshot = str => str.split(thisVersion).join('@@VERSION@@')
+
+const resolveMatchSnapshot = (t, p, msg) => p.then((res) => new Promise(resolve => {
+  const actual = [
+    'Object {',
+    `  "code": ${res.code},`,
+    `  "err": "${res.err.replace(/\n/g, "\\n")}",`,
+    `  "out": "${res.out.replace(/\n/g, "\\n")}",`,
+    `  "signal": ${res.signal},`,
+    `}`,
+  ].join('\n').split(thisVersion).join('@@VERSION@@')
+  t.matchSnapshot(actual, msg)
+  resolve()
+}))
 
 const spawn = require('child_process').spawn
 const bin = require.resolve('../bin/semver')
@@ -30,14 +42,14 @@ t.test('inc tests', t => Promise.all([
   ['-i', 'major', '1.0.0', '1.0.1'],
   ['-i', 'premajor', '1.0.0', '--preid=beta'],
   ['-i', '1.2.3'],
-].map(args => t.resolveMatchSnapshot(run(args), args.join(' ')))))
+].map(args => resolveMatchSnapshot(t, run(args), args.join(' ')))))
 
 t.test('help output', t => Promise.all([
   ['-h'],
   ['-?'],
   ['--help'],
   []
-].map(h => t.resolveMatchSnapshot(run(h), h[0] || '(no args)'))))
+].map(h => resolveMatchSnapshot(t, run(h), h[0] || '(no args)'))))
 
 t.test('sorting and filtering', t => Promise.all([
   ['1.2.3', '3.2.1', '2.3.4'],
@@ -51,7 +63,7 @@ t.test('sorting and filtering', t => Promise.all([
   ['1.2.3', '3.2.1', '2.3.4', '2.3.4-beta', '2.0.0asdf', '-r', '2.x', '-p'],
   ['3.2.1', '2.3.4', '2.3.4-beta', '2.0.0asdf', '-r', '2.x', '-p', '-l'],
   ['1.2.3', '3.2.1', '-r', '2.x'],
-].map(args => t.resolveMatchSnapshot(run(args), args.join(' ')))))
+].map(args => resolveMatchSnapshot(t, run(args), args.join(' ')))))
 
 t.test('coercing', t => Promise.all([
   ['1.2.3.4.5.6', '-c'],
@@ -59,4 +71,4 @@ t.test('coercing', t => Promise.all([
   ['1.2.3.4.5.6', '-c', '--rtl', '--ltr'],
   ['not a version', '1.2.3', '-c'],
   ['not a version', '-c'],
-].map(args => t.resolveMatchSnapshot(run(args), args.join(' ')))))
+].map(args => resolveMatchSnapshot(t, run(args), args.join(' ')))))
diff --git a/test/index.js b/test/index.js
index cd325556..0aee90be 100644
--- a/test/index.js
+++ b/test/index.js
@@ -19,20 +19,6 @@ var SemVer = semver.SemVer
 var Range = semver.Range
 var Comparator = semver.Comparator
 
-test('has a list of src, re, and tokens', function (t) {
-  t.match(Object.assign({}, semver), {
-    src: Array,
-    re: Array,
-    tokens: Object
-  })
-  semver.re.forEach(r => t.match(r, RegExp, 'regexps are regexps'))
-  semver.src.forEach(s => t.match(s, String, 'src is strings'))
-  for (const i in semver.tokens) {
-    t.match(semver.tokens[i], Number, 'tokens are numbers')
-  }
-  t.end()
-})
-
 test('comparison tests', function (t) {
   // [version1, version2]
   // version1 should be greater than version2
@@ -66,7 +52,7 @@ test('comparison tests', function (t) {
     ['1.2.3-a.b', '1.2.3-a'],
     ['1.2.3-a.b.c.10.d.5', '1.2.3-a.b.c.5.d.100'],
     ['1.2.3-r2', '1.2.3-r100'],
-    ['1.2.3-r100', '1.2.3-R2'],
+    ['1.2.3-r100', '1.2.3-R2']
   ].forEach(function (v) {
     var v0 = v[0]
     var v1 = v[1]
@@ -211,8 +197,6 @@ test('range tests', function (t) {
     ['*', '1.2.3'],
     ['2', '2.1.2'],
     ['2.3', '2.3.1'],
-    ['~0.0.1', '0.0.1'],
-    ['~0.0.1', '0.0.2'],
     ['~x', '0.0.9'], // >=2.4.0 <2.5.0
     ['~2', '2.0.9'], // >=2.4.0 <2.5.0
     ['~2.4', '2.4.0'], // >=2.4.0 <2.5.0
@@ -255,21 +239,18 @@ test('range tests', function (t) {
     ['^1.2.3-alpha', '1.2.3-pre'],
     ['^1.2.0-alpha', '1.2.0-pre'],
     ['^0.0.1-alpha', '0.0.1-beta'],
-    ['^0.0.1-alpha', '0.0.1'],
     ['^0.1.1-alpha', '0.1.1-beta'],
     ['^x', '1.2.3'],
     ['x - 1.0.0', '0.9.7'],
     ['x - 1.x', '0.9.7'],
     ['1.0.0 - x', '1.9.7'],
     ['1.x - x', '1.9.7'],
-    ['<=7.x', '7.9.9'],
-    ['2.x', '2.0.0-pre.0', { includePrerelease: true }],
-    ['2.x', '2.1.0-pre.0', { includePrerelease: true }],
+    ['<=7.x', '7.9.9']
   ].forEach(function (v) {
     var range = v[0]
     var ver = v[1]
-    var options = v[2]
-    t.ok(satisfies(ver, range, options), range + ' satisfied by ' + ver)
+    var loose = v[2]
+    t.ok(satisfies(ver, range, loose), range + ' satisfied by ' + ver)
   })
   t.end()
 })
@@ -320,8 +301,6 @@ test('negative range tests', function (t) {
     ['1.2.* || 2.*', '1.1.3'],
     ['2', '1.1.2'],
     ['2.3', '2.4.1'],
-    ['~0.0.1', '0.1.0-alpha'],
-    ['~0.0.1', '0.1.0'],
     ['~2.4', '2.5.0'], // >=2.4.0 <2.5.0
     ['~2.4', '2.3.9'],
     ['~>3.2.1', '3.3.2'], // >=3.2.1 <3.3.0
@@ -339,7 +318,6 @@ test('negative range tests', function (t) {
     ['<1.2.3', '1.2.3-beta'],
     ['=1.2.3', '1.2.3-beta'],
     ['>1.2', '1.2.8'],
-    ['^0.0.1', '0.0.2-alpha'],
     ['^0.0.1', '0.0.2'],
     ['^1.2.3', '2.0.0-alpha'],
     ['^1.2.3', '1.2.2'],
@@ -349,17 +327,13 @@ test('negative range tests', function (t) {
     ['blerg', '1.2.3'],
     ['git+https://user:password0123@github.com/foo', '123.0.0', true],
     ['^1.2.3', '2.0.0-pre'],
-    ['0.x', undefined],
-    ['*', undefined],
-    // invalid versions never satisfy, but shouldn't throw
-    ['*', 'not a version'],
-    ['>=2', 'glorp'],
-    ['2.x', '3.0.0-pre.0', { includePrerelease: true }],
+    ['^1.2.3', false],
+    ['== 1.0.0 || foo', '2.0.0', { loose: true }]
   ].forEach(function (v) {
     var range = v[0]
     var ver = v[1]
-    var options = v[2]
-    var found = satisfies(ver, range, options)
+    var loose = v[2]
+    var found = satisfies(ver, range, loose)
     t.ok(!found, ver + ' not satisfied by ' + range)
   })
   t.end()
@@ -696,8 +670,8 @@ test('comparators test', function (t) {
     ['1.2 - 3.4.5', [['>=1.2.0', '<=3.4.5']]],
     ['1.2.3 - 3.4', [['>=1.2.3', '<3.5.0']]],
     ['1.2.3 - 3', [['>=1.2.3', '<4.0.0']]],
-    ['>*', [['<0.0.0-0']]],
-    ['<*', [['<0.0.0-0']]]
+    ['>*', [['<0.0.0']]],
+    ['<*', [['<0.0.0']]]
   ].forEach(function (v) {
     var pre = v[0]
     var wanted = v[1]
@@ -767,32 +741,6 @@ test('compare main vs pre', function (t) {
   t.end()
 })
 
-test('compareBuild', function (t) {
-  var noBuild = new SemVer('1.0.0')
-  var build0 = new SemVer('1.0.0+0')
-  var build1 = new SemVer('1.0.0+1')
-  var build10 = new SemVer('1.0.0+1.0')
-  t.equal(noBuild.compareBuild(build0), -1)
-  t.equal(build0.compareBuild(build0), 0)
-  t.equal(build0.compareBuild(noBuild), 1)
-
-  t.equal(build0.compareBuild('1.0.0+0.0'), -1)
-  t.equal(build0.compareBuild(build1), -1)
-  t.equal(build1.compareBuild(build0), 1)
-  t.equal(build10.compareBuild(build1), 1)
-
-  t.end()
-})
-
-test('rcompare', function (t) {
-  t.equal(semver.rcompare('1.0.0', '1.0.1'), 1)
-  t.equal(semver.rcompare('1.0.0', '1.0.0'), 0)
-  t.equal(semver.rcompare('1.0.0+0', '1.0.0'), 0)
-  t.equal(semver.rcompare('1.0.1', '1.0.0'), -1)
-
-  t.end()
-})
-
 test('rcompareIdentifiers and compareIdentifiers', function (t) {
   var set = [
     ['1', '2'],
@@ -928,86 +876,36 @@ test('missing comparator parameter in intersect comparators', function (t) {
 test('ranges intersect', function (t) {
   [
     ['1.3.0 || <1.0.0 >2.0.0', '1.3.0 || <1.0.0 >2.0.0', true],
-    ['<1.0.0 >2.0.0', '>0.0.0', false],
-    ['>0.0.0', '<1.0.0 >2.0.0', false],
+    ['<1.0.0 >2.0.0', '>0.0.0', true],
     ['<1.0.0 >2.0.0', '>1.4.0 <1.6.0', false],
     ['<1.0.0 >2.0.0', '>1.4.0 <1.6.0 || 2.0.0', false],
     ['>1.0.0 <=2.0.0', '2.0.0', true],
     ['<1.0.0 >=2.0.0', '2.1.0', false],
-    ['<1.0.0 >=2.0.0', '>1.4.0 <1.6.0 || 2.0.0', false],
-    ['1.5.x', '<1.5.0 || >=1.6.0', false],
-    ['<1.5.0 || >=1.6.0', '1.5.x', false],
-    ['<1.6.16 || >=1.7.0 <1.7.11 || >=1.8.0 <1.8.2', '>=1.6.16 <1.7.0 || >=1.7.11 <1.8.0 || >=1.8.2', false],
-    ['<=1.6.16 || >=1.7.0 <1.7.11 || >=1.8.0 <1.8.2', '>=1.6.16 <1.7.0 || >=1.7.11 <1.8.0 || >=1.8.2', true],
-    ['>=1.0.0', '<=1.0.0', true],
-    ['>1.0.0 <1.0.0', '<=0.0.0', false],
-    ['*', '0.0.1', true],
-    ['*', '>=1.0.0', true],
-    ['*', '>1.0.0', true],
-    ['*', '~1.0.0', true],
-    ['*', '<1.6.0', true],
-    ['*', '<=1.6.0', true],
-    ['1.*', '0.0.1', false],
-    ['1.*', '2.0.0', false],
-    ['1.*', '1.0.0', true],
-    ['1.*', '<2.0.0', true],
-    ['1.*', '>1.0.0', true],
-    ['1.*', '<=1.0.0', true],
-    ['1.*', '^1.0.0', true],
-    ['1.0.*', '0.0.1', false],
-    ['1.0.*', '<0.0.1', false],
-    ['1.0.*', '>0.0.1', true],
-    ['*', '1.3.0 || <1.0.0 >2.0.0', true],
-    ['1.3.0 || <1.0.0 >2.0.0', '*', true],
-    ['1.*', '1.3.0 || <1.0.0 >2.0.0', true],
-    ['x', '0.0.1', true],
-    ['x', '>=1.0.0', true],
-    ['x', '>1.0.0', true],
-    ['x', '~1.0.0', true],
-    ['x', '<1.6.0', true],
-    ['x', '<=1.6.0', true],
-    ['1.x', '0.0.1', false],
-    ['1.x', '2.0.0', false],
-    ['1.x', '1.0.0', true],
-    ['1.x', '<2.0.0', true],
-    ['1.x', '>1.0.0', true],
-    ['1.x', '<=1.0.0', true],
-    ['1.x', '^1.0.0', true],
-    ['1.0.x', '0.0.1', false],
-    ['1.0.x', '<0.0.1', false],
-    ['1.0.x', '>0.0.1', true],
-    ['x', '1.3.0 || <1.0.0 >2.0.0', true],
-    ['1.3.0 || <1.0.0 >2.0.0', 'x', true],
-    ['1.x', '1.3.0 || <1.0.0 >2.0.0', true],
-    ['*', '*', true],
-    ['x', '', true],
+    ['<1.0.0 >=2.0.0', '>1.4.0 <1.6.0 || 2.0.0', false]
   ].forEach(function (v) {
-    t.test(v[0] + ' <~> ' + v[1], t => {
-      var range1 = new Range(v[0])
-      var range2 = new Range(v[1])
-      var expect = v[2]
-      var actual1 = range1.intersects(range2)
-      var actual2 = range2.intersects(range1)
-      var actual3 = semver.intersects(v[1], v[0])
-      var actual4 = semver.intersects(v[0], v[1])
-      var actual5 = semver.intersects(v[1], v[0], true)
-      var actual6 = semver.intersects(v[0], v[1], true)
-      var actual7 = semver.intersects(range1, range2)
-      var actual8 = semver.intersects(range2, range1)
-      var actual9 = semver.intersects(range1, range2, true)
-      var actual0 = semver.intersects(range2, range1, true)
-      t.equal(actual1, expect)
-      t.equal(actual2, expect)
-      t.equal(actual3, expect)
-      t.equal(actual4, expect)
-      t.equal(actual5, expect)
-      t.equal(actual6, expect)
-      t.equal(actual7, expect)
-      t.equal(actual8, expect)
-      t.equal(actual9, expect)
-      t.equal(actual0, expect)
-      t.end()
-    })
+    var range1 = new Range(v[0])
+    var range2 = new Range(v[1])
+    var expect = v[2]
+    var actual1 = range1.intersects(range2)
+    var actual2 = range2.intersects(range1)
+    var actual3 = semver.intersects(v[1], v[0])
+    var actual4 = semver.intersects(v[0], v[1])
+    var actual5 = semver.intersects(v[1], v[0], true)
+    var actual6 = semver.intersects(v[0], v[1], true)
+    var actual7 = semver.intersects(range1, range2)
+    var actual8 = semver.intersects(range2, range1)
+    var actual9 = semver.intersects(range1, range2, true)
+    var actual0 = semver.intersects(range2, range1, true)
+    t.equal(actual1, expect)
+    t.equal(actual2, expect)
+    t.equal(actual3, expect)
+    t.equal(actual4, expect)
+    t.equal(actual5, expect)
+    t.equal(actual6, expect)
+    t.equal(actual7, expect)
+    t.equal(actual8, expect)
+    t.equal(actual9, expect)
+    t.equal(actual0, expect)
   })
   t.end()
 })
@@ -1034,9 +932,6 @@ test('comparator testing', function (t) {
   t.ok(c2.test('1.2.4'))
   var c3 = new Comparator(c, true)
   t.ok(c3.test('1.2.4'))
-  // test an invalid version, should not throw
-  var c4 = new Comparator(c)
-  t.notOk(c4.test('not a version string'))
   t.end()
 })
 
@@ -1055,8 +950,6 @@ test('invalid cmp usage', function (t) {
 
 test('sorting', function (t) {
   var list = [
-    '1.2.3+1',
-    '1.2.3+0',
     '1.2.3',
     '5.9.6',
     '0.1.2'
@@ -1064,14 +957,10 @@ test('sorting', function (t) {
   var sorted = [
     '0.1.2',
     '1.2.3',
-    '1.2.3+0',
-    '1.2.3+1',
     '5.9.6'
   ]
   var rsorted = [
     '5.9.6',
-    '1.2.3+1',
-    '1.2.3+0',
     '1.2.3',
     '0.1.2'
   ]
@@ -1092,3 +981,12 @@ test('really big numeric prerelease value', function (t) {
   t.strictSame(r.prerelease, [ 'beta', '90071992547409910' ])
   t.end()
 })
+
+test('long build id', function (t) {
+  var longBuild = '-928490632884417731e7af463c92b034d6a78268fc993bcb88a57944'
+  var shortVersion = '1.1.1'
+  var longVersion = Number.MAX_SAFE_INTEGER + '.' + Number.MAX_SAFE_INTEGER + '.' + Number.MAX_SAFE_INTEGER
+  t.equal(semver.valid(shortVersion + longBuild), shortVersion + longBuild)
+  t.equal(semver.valid(longVersion + longBuild), longVersion + longBuild)
+  t.end()
+})
\ No newline at end of file
diff --git a/test/re.js b/test/re.js
new file mode 100644
index 00000000..8943e503
--- /dev/null
+++ b/test/re.js
@@ -0,0 +1,14 @@
+var test = require('tap').test
+var semver = require('../')
+
+test('has a list of src, re, and safeRe', function (t) {
+  semver.re.forEach(function (r) { return t.match(r, RegExp, 'regexps are regexps') })
+  semver.src.forEach(function (s) { return t.match(s, String, 'src is strings') })
+
+  semver.safeRe.forEach(function (r) {
+    t.notMatch(r.source, '\\s+', 'safe regex do not contain greedy whitespace')
+    t.notMatch(r.source, '\\s*', 'safe regex do not contain greedy whitespace')
+  })
+
+  t.end()
+})
diff --git a/test/whitespace.js b/test/whitespace.js
new file mode 100644
index 00000000..9ee6f719
--- /dev/null
+++ b/test/whitespace.js
@@ -0,0 +1,63 @@
+var test = require('tap').test
+var semver = require('../')
+
+var validRange = semver.validRange
+var SemVer = semver.SemVer
+var Range = semver.Range
+var Comparator = semver.Comparator
+var minVersion = semver.minVersion
+var minSatisfying = semver.minSatisfying
+var maxSatisfying = semver.maxSatisfying
+
+function s(n, char) {
+  if (!n) {
+    n = 500000
+  }
+  if (!char) {
+    char = ' '
+  }
+  var c = ''
+  for (var i = 0; i < n; i++) {
+    c += char
+  }
+  return c
+}
+
+test('regex dos via range whitespace', function (t) {
+  // a range with this much whitespace would take a few minutes to process if
+  // any redos susceptible regexes were used. there is a global tap timeout per
+  // file set in the package.json that will error if this test takes too long.
+  var r = `1.2.3 ${s()} <1.3.0`
+
+  t.equal(new Range(r).range, '1.2.3 <1.3.0')
+  t.equal(validRange(r), '1.2.3 <1.3.0')
+  t.equal(minVersion(r).version, '1.2.3')
+  t.equal(minSatisfying(['1.2.3'], r), '1.2.3')
+  t.equal(maxSatisfying(['1.2.3'], r), '1.2.3')
+
+  t.end()
+})
+
+test('range with 0', function (t) {
+  var r = `1.2.3 ${s(null, '0')} <1.3.0`
+  t.throws(function () { return new Range(r).range })
+  t.equal(validRange(r), null)
+  t.throws(function () { return minVersion(r).version })
+  t.equal(minSatisfying(['1.2.3'], r), null)
+  t.equal(maxSatisfying(['1.2.3'], r), null)
+  t.end()
+})
+
+test('semver version', function (t) {
+  var v = `${s(125)}1.2.3${s(125)}`
+  var tooLong = `${s()}1.2.3${s()}`
+  t.equal(new SemVer(v).version, '1.2.3')
+  t.throws(function () { return new SemVer(tooLong) })
+  t.end()
+})
+
+test('comparator', function (t) {
+  var c = `${s()}<${s()}1.2.3${s()}`
+  t.equal(new Comparator(c).value, '<1.2.3')
+  t.end()
+})