You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
100 lines
4.0 KiB
100 lines
4.0 KiB
/**
|
|
* @fileoverview Rule to require sorting of variables within a single Variable Declaration block
|
|
* @author Ilya Volodin
|
|
*/
|
|
|
|
"use strict";
|
|
|
|
//------------------------------------------------------------------------------
|
|
// Rule Definition
|
|
//------------------------------------------------------------------------------
|
|
|
|
module.exports = {
|
|
meta: {
|
|
type: "suggestion",
|
|
|
|
docs: {
|
|
description: "require variables within the same declaration block to be sorted",
|
|
category: "Stylistic Issues",
|
|
recommended: false,
|
|
url: "https://eslint.org/docs/rules/sort-vars"
|
|
},
|
|
|
|
schema: [
|
|
{
|
|
type: "object",
|
|
properties: {
|
|
ignoreCase: {
|
|
type: "boolean",
|
|
default: false
|
|
}
|
|
},
|
|
additionalProperties: false
|
|
}
|
|
],
|
|
|
|
fixable: "code"
|
|
},
|
|
|
|
create(context) {
|
|
|
|
const configuration = context.options[0] || {},
|
|
ignoreCase = configuration.ignoreCase || false,
|
|
sourceCode = context.getSourceCode();
|
|
|
|
return {
|
|
VariableDeclaration(node) {
|
|
const idDeclarations = node.declarations.filter(decl => decl.id.type === "Identifier");
|
|
const getSortableName = ignoreCase ? decl => decl.id.name.toLowerCase() : decl => decl.id.name;
|
|
const unfixable = idDeclarations.some(decl => decl.init !== null && decl.init.type !== "Literal");
|
|
let fixed = false;
|
|
|
|
idDeclarations.slice(1).reduce((memo, decl) => {
|
|
const lastVariableName = getSortableName(memo),
|
|
currentVariableName = getSortableName(decl);
|
|
|
|
if (currentVariableName < lastVariableName) {
|
|
context.report({
|
|
node: decl,
|
|
message: "Variables within the same declaration block should be sorted alphabetically.",
|
|
fix(fixer) {
|
|
if (unfixable || fixed) {
|
|
return null;
|
|
}
|
|
return fixer.replaceTextRange(
|
|
[idDeclarations[0].range[0], idDeclarations[idDeclarations.length - 1].range[1]],
|
|
idDeclarations
|
|
|
|
// Clone the idDeclarations array to avoid mutating it
|
|
.slice()
|
|
|
|
// Sort the array into the desired order
|
|
.sort((declA, declB) => {
|
|
const aName = getSortableName(declA);
|
|
const bName = getSortableName(declB);
|
|
|
|
return aName > bName ? 1 : -1;
|
|
})
|
|
|
|
// Build a string out of the sorted list of identifier declarations and the text between the originals
|
|
.reduce((sourceText, identifier, index) => {
|
|
const textAfterIdentifier = index === idDeclarations.length - 1
|
|
? ""
|
|
: sourceCode.getText().slice(idDeclarations[index].range[1], idDeclarations[index + 1].range[0]);
|
|
|
|
return sourceText + sourceCode.getText(identifier) + textAfterIdentifier;
|
|
}, "")
|
|
|
|
);
|
|
}
|
|
});
|
|
fixed = true;
|
|
return memo;
|
|
}
|
|
return decl;
|
|
|
|
}, idDeclarations[0]);
|
|
}
|
|
};
|
|
}
|
|
};
|
|
|