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-rw-r--r-- | docs/code-quality/lint/linters/eslint-plugin-mozilla/rules/prefer-boolean-length-check.rst | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/docs/code-quality/lint/linters/eslint-plugin-mozilla/rules/prefer-boolean-length-check.rst b/docs/code-quality/lint/linters/eslint-plugin-mozilla/rules/prefer-boolean-length-check.rst new file mode 100644 index 0000000000..cd6ee4e544 --- /dev/null +++ b/docs/code-quality/lint/linters/eslint-plugin-mozilla/rules/prefer-boolean-length-check.rst @@ -0,0 +1,24 @@ +prefer-boolean-length-check +=========================== + +Prefers using a boolean length check rather than comparing against zero. + +Examples of incorrect code for this rule: +----------------------------------------- + +.. code-block:: js + + if (foo.length == 0) {} + if (foo.length > 0) {} + if (foo && foo.length == 0) {} + function bar() { return foo.length > 0 } + +Examples of correct code for this rule: +--------------------------------------- + +.. code-block:: js + + if (foo.length && foo.length) {} + if (!foo.length) {} + var a = foo.length > 0 + function bar() { return !!foo.length } |