no-extra-boolean-cast
NOTE: this rule is part of the
推荐 rule set.Enable full set in
deno.json:{
"lint": {
"rules": {
"tags": ["推荐"]
}
}
}Enable full set using the Deno CLI:
deno lint --rules-tags=推荐
This rule can be explictly included to or excluded from the rules present in the current tag by adding it to the
include or exclude array in deno.json:{
"lint": {
"rules": {
"include": ["no-extra-boolean-cast"],
"exclude": ["no-extra-boolean-cast"]
}
}
}禁止不必要的布尔类型强制转换。
在某些上下文中，例如 if、while 或 for 语句，表达式会自动转为布尔值。因此，像双重否定 (!!foo) 或强制转换 (Boolean(foo)) 这样的技术是多余的，并且与不进行否定或强制转换得到的结果相同。
无效：
if (!!foo) {}
if (Boolean(foo)) {}
while (!!foo) {}
for (; Boolean(foo);) {}
有效：
if (foo) {}
while (foo) {}
for (; foo;) {}