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Difference between revisions of "Orion/ESLint"
< Orion
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(→Rules) |
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| Line 64: | Line 64: | ||
| max-len | | max-len | ||
| − | | | + | | '''maxlen''' |
| − | | | + | | Line too long. |
|- | |- | ||
| Line 340: | Line 340: | ||
| no-sync | | no-sync | ||
| − | | | + | | '''stupid''' |
| − | | | + | | Unexpected sync method: '{a}'. |
| + | | Flags Node.js's synchronous I/O methods.<br>The '''stupid''' option is supported only in newer versions of JSLint (not Orion's). | ||
|- | |- | ||
| Line 373: | Line 374: | ||
| - | | - | ||
| Expected an assignment or function call and instead saw an expression. | | Expected an assignment or function call and instead saw an expression. | ||
| − | | Flags | + | | Flags expressions that appear in a statement context and don't cause side effects. |
|- | |- | ||
| no-unused-vars | | no-unused-vars | ||
| − | | | + | | '''unparam''' (newer JSLint versions only) |
| + | | Function declares unused variable '{a}'. | ||
| | | | ||
|- | |- | ||
Revision as of 13:09, 15 November 2013
Orion 5.0 will replace our current JSLint validator with ESLint. This page captures ongoing issues.
Rules
Here's a table showing the equivalent validation rules in JSLint and ESLint. If a rule has no "JSLint option", then JSLint always enforces it and it cannot be disabled.
| ESLint rule | JSLint option | JSLint message | Details |
|---|---|---|---|
| block-scoped-var | - | '{variable}' is already defined. | Occurs when a function-scoped variable is treated as if it was block scoped. ESLint calls this error '{variable} used outside of binding context.' |
| brace-style | |||
| camelcase | |||
| complexity | |||
| consistent-this | |||
| curly | |||
| dot-notation | sub | {a} is better written in dot notation. | |
| eqeqeq | eqeqeq eqeq |
Expected '===' and saw '=='. Expected '!==' and saw '!='. |
eqeq only appears in old versions of JSLint (like Orion's), has opposite on/off state to eqeqeq. |
| guard-for-in | forin | The body of a for in should be wrapped in an if statement to filter unwanted properties from the prototype. | |
| max-depth | |||
| max-len | maxlen | Line too long. | |
| max-params | |||
| max-statements | |||
| new-cap | newcap | A constructor name should start with an uppercase letter. | |
| new-parens | - | Missing '()' invoking a constructor. | Flags new Whatever
|
| no-alert | |||
| no-bitwise | bitwise | Unexpected use of 'Template:Operator. | JSLint disallows bitwise ops by default. |
| no-caller | - | (Not supported) | Flags references to arguments.callee and arguments.caller.
|
| no-catch-shadow | |||
| no-comma-dangle | - | Unexpected comma. | Flags trailing commas in object literals. |
| no-cond-assign | |||
| no-console | |||
| no-control-regex | |||
| no-debugger | |||
| no-delete-var | |||
| no-div-regex | |||
| no-dupe-keys | - | Duplicate key '{a}'. | Flags object literals that contain the same key more than once. |
| no-else-return | |||
| no-empty-class | |||
| no-empty-label | |||
| no-empty | - | (Not supported) | Flags an empty block like if (..) { } |
| no-eq-null | |||
| no-eval | evil | eval is evil. | |
| no-ex-assign | - | Do not assign to the exception parameter. | |
| no-extra-semi | - | Unnecessary semicolon. | |
| no-fallthrough | |||
| no-floating-decimal | |||
| no-func-assign | |||
| no-global-strict | |||
| no-implied-eval | |||
| no-iterator | |||
| no-label-var | |||
| no-loop-func | |||
| no-mixed-requires | |||
| no-multi-str | |||
| no-native-reassign | |||
| no-negated-in-lhs | |||
| no-new-array | - | Use the array literal notation []. | Flags new Array()
|
| no-new-func | - | Do not use 'new' for side effects. | Flags uses of new operator in an expression that is not assigned to anything.
|
| no-new-object | - | Use the object literal notation {}. | |
| no-new-wrappers | Do not use {String, Number, Boolean, Math, JSON} as a constructor. | ||
| no-new | |||
| no-obj-calls | |||
| no-octal-escape | |||
| no-octal | |||
| no-plusplus | plusplus | Unexpected use of '{++, --}' | |
| no-proto | - | "Reserved name '__proto__'. (if used as an identifier) Stupid key '{a}' (if used as a key) |
Treated as a fatal parse error in JSLint. |
| no-redeclare | - | "'{a}' is already defined." | Usually results from having two for loops in the same function that share a loop variable declaration like var i=....
|
| no-return-assign | - | (Not supported) | Prevents assignment in a return statement.
|
| no-script-url | |||
| no-self-compare | |||
| no-shadow | |||
| no-spaced-func | |||
| no-sync | stupid | Unexpected sync method: '{a}'. | Flags Node.js's synchronous I/O methods. The stupid option is supported only in newer versions of JSLint (not Orion's). |
| no-ternary | |||
| no-undef-init | - | It is not necessary to initialize 'x' to 'undefined'. | |
| no-undef | undef | '{variable}' is not defined. | Flags references to a global variable that is not listed in a /*global*/ or /*globals*/ block. Predefined environments (eg. node, browser) can be set as /*jslint */ block. |
| no-underscore-dangle | nomen | dangling '_' | |
| no-unreachable | |||
| no-unused-expressions | - | Expected an assignment or function call and instead saw an expression. | Flags expressions that appear in a statement context and don't cause side effects. |
| no-unused-vars | unparam (newer JSLint versions only) | Function declares unused variable '{a}'. | |
| no-use-before-define | - | '{a}' was used before it was defined. | |
| no-with | - | Expected an identifier and instead saw 'with'. | Treated as fatal parse error in JSLint. |
| no-wrap-func | |||
| one-var | |||
| quote-props | |||
| quotes | Strings must use doublequote. | Only if "jsonmode" | |
| radix | - | Missing radix parameter. | Affects parseInt() |
| regex-spaces | - | Spaces are hard to count. Use {n}. | |
| semi | - | Missing semicolon. | |
| strict | strict | Requires "use strict" pragma.
| |
| unnecessary-strict | |||
| use-isnan | - | Use the isNaN function to compare with NaN. | |
| wrap-iife | immed | Wrap the entire immediate function invocation in parens. Do not wrap function literals in parens unless they are to be immediately invoked. Move the invocation into the parens that contain the function. |
|
| wrap-regex | - | Wrap the /regexp/ literal in parens to disambiguate the slash operator. |
Rule priority
Here are the rules we want, in order of priority:
- no-undef