Deno cheat sheet v1.22

Cli options:

• To stop on the first failure: --fail-fast.
• To filter the test you are running: --filter "string or /pattern/

Directives

• Ignore an entire file:

  • JavaScript: // deno-fmt-ignore-file
  • Markdown: <!-- deno-fmt-ignore-file -->

• Ignore the preceding code:

  • JavaScript: // deno-fmt-ignore
  • Markdown: <!-- deno-fmt-ignore -->

• Ignore a markdown section:

  • Start: <!-- deno-fmt-ignore-start -->
  • End: <!-- deno-fmt-ignore-end -->

Configuration

• Whether to use tabs
  • CLI: --options-use-tabs
  • deno.json: fmt.options.useTabs
  • default: false (use spaces)
• The width of a line the printer will try to stay under. Note that the printer may exceed this width in certain cases.
  • CLI: --options-line-width
  • deno.json: fmt.options.lineWidth
  • default: 80
• The number of characters for an indent.
  • CLI: --options-indent-width
  • deno.json: fmt.options.indentWidth
  • default: 2
• Whether to use single quote.
  • CLI: --options-single-quote
  • deno.json: fmt.options.singleQuote
  • default: false (using double quote)
• Define how prose should be wrapped in Markdown files.
  • CLI: --options-prose-wrap={always,never,preserve}
  • deno.json: fmt.options.proseWrap
  • default: always

JavaScript directives

• Ignore a entire file: // deno-lint-ignore-file
• Ignore a specific diagnostics in a entire file: // deno-lint-ignore-file <codes...>
• Ignore certain diagnostics: // deno-lint-ignore <codes...>

Configuration

List of rules

• List of tag names that will be run. Empty list disables all tags and will only use rules from include.
  • CLI: --rules-tags
  • deno.json: lint.rules.tags
  • default: ["recommended"]
• List of rule names that will be excluded from configured tag sets. If the same rule is in include it will be run.
  • CLI: --rules-exclude
  • deno.json: lint.rules.exclude
  • default: []
• List of rule names that will be run. Even if the same rule is in exclude it will be run.
  • CLI: --rules-include
  • deno.json: lint.rules.include
  • default: []

Supported syntax

• Sequential list (if success): command1 && command2
• Sequential list (if not success) command1 || command2
• Sequential list (regardless of previous command is success or not): command1 ; command2
• Async commands: command1 & command2
• Negate exit code (from 1 to 0): ! command1
• Copy files: cp
• Move files: mv
• Remove files or directories: rm -rf
• Make directories: mkdir
• Print the current directory: pwd
• Delays for a specific amount of time: sleep
• Display a line of text: echo
• Causes the shell to exit: exit