JS.BASE.MAX.DEPTH
Enforce a maximum depth that blocks can be nested
Many developers consider code difficult to read if blocks are nested beyond a certain depth.
Rule Details
This rule enforces a maximum depth that blocks can be nested to reduce code complexity.
Options
This rule has a number or object option:
"max"(default4) enforces a maximum depth that blocks can be nested
Deprecated: The object property maximum is deprecated; please use the object property max instead.
max
Examples of incorrect code for this rule with the default { "max": 4 } option:
Copy
/*eslint max-depth: ["error", 4]*/
function foo() {
for (;;) { // Nested 1 deep
while (true) { // Nested 2 deep
if (true) { // Nested 3 deep
if (true) { // Nested 4 deep
if (true) { // Nested 5 deep
}
}
}
}
}
}
Examples of correct code for this rule with the default { "max": 4 } option:
Copy
/*eslint max-depth: ["error", 4]*/
function foo() {
for (;;) { // Nested 1 deep
while (true) { // Nested 2 deep
if (true) { // Nested 3 deep
if (true) { // Nested 4 deep
}
}
}
}
}
Note that class static blocks do not count as nested blocks, and that the depth in them is calculated separately from the enclosing context.
Examples of incorrect code for this rule with { "max": 2 } option:
Copy
/*eslint max-depth: ["error", 2]*/
function foo() {
if (true) { // Nested 1 deep
class C {
static {
if (true) { // Nested 1 deep
if (true) { // Nested 2 deep
if (true) { // Nested 3 deep
}
}
}
}
}
}
}
Examples of correct code for this rule with { "max": 2 } option:
Copy
/*eslint max-depth: ["error", 2]*/
function foo() {
if (true) { // Nested 1 deep
class C {
static {
if (true) { // Nested 1 deep
if (true) { // Nested 2 deep
}
}
}
}
}
}