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https://github.com/joelwmale/webhook-action.git
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142 lines
4.6 KiB
JavaScript
142 lines
4.6 KiB
JavaScript
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/**
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* @fileoverview Rule to enforce spacing around embedded expressions of template strings
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* @author Toru Nagashima
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*/
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"use strict";
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//------------------------------------------------------------------------------
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// Requirements
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//------------------------------------------------------------------------------
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const astUtils = require("./utils/ast-utils");
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//------------------------------------------------------------------------------
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// Rule Definition
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//------------------------------------------------------------------------------
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module.exports = {
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meta: {
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type: "layout",
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docs: {
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description: "require or disallow spacing around embedded expressions of template strings",
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category: "ECMAScript 6",
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recommended: false,
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url: "https://eslint.org/docs/rules/template-curly-spacing"
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},
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fixable: "whitespace",
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schema: [
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{ enum: ["always", "never"] }
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],
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messages: {
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expectedBefore: "Expected space(s) before '}'.",
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expectedAfter: "Expected space(s) after '${'.",
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unexpectedBefore: "Unexpected space(s) before '}'.",
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unexpectedAfter: "Unexpected space(s) after '${'."
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}
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},
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create(context) {
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const sourceCode = context.getSourceCode();
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const always = context.options[0] === "always";
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/**
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* Checks spacing before `}` of a given token.
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* @param {Token} token A token to check. This is a Template token.
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* @returns {void}
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*/
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function checkSpacingBefore(token) {
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if (!token.value.startsWith("}")) {
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return; // starts with a backtick, this is the first template element in the template literal
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}
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const prevToken = sourceCode.getTokenBefore(token, { includeComments: true }),
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hasSpace = sourceCode.isSpaceBetween(prevToken, token);
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if (!astUtils.isTokenOnSameLine(prevToken, token)) {
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return;
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}
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if (always && !hasSpace) {
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context.report({
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loc: {
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start: token.loc.start,
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end: {
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line: token.loc.start.line,
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column: token.loc.start.column + 1
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}
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},
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messageId: "expectedBefore",
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fix: fixer => fixer.insertTextBefore(token, " ")
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});
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}
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if (!always && hasSpace) {
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context.report({
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loc: {
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start: prevToken.loc.end,
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end: token.loc.start
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},
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messageId: "unexpectedBefore",
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fix: fixer => fixer.removeRange([prevToken.range[1], token.range[0]])
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});
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}
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}
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/**
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* Checks spacing after `${` of a given token.
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* @param {Token} token A token to check. This is a Template token.
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* @returns {void}
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*/
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function checkSpacingAfter(token) {
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if (!token.value.endsWith("${")) {
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return; // ends with a backtick, this is the last template element in the template literal
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}
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const nextToken = sourceCode.getTokenAfter(token, { includeComments: true }),
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hasSpace = sourceCode.isSpaceBetween(token, nextToken);
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if (!astUtils.isTokenOnSameLine(token, nextToken)) {
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return;
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}
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if (always && !hasSpace) {
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context.report({
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loc: {
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start: {
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line: token.loc.end.line,
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column: token.loc.end.column - 2
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},
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end: token.loc.end
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},
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messageId: "expectedAfter",
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fix: fixer => fixer.insertTextAfter(token, " ")
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});
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}
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if (!always && hasSpace) {
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context.report({
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loc: {
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start: token.loc.end,
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end: nextToken.loc.start
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},
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messageId: "unexpectedAfter",
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fix: fixer => fixer.removeRange([token.range[1], nextToken.range[0]])
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});
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}
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}
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return {
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TemplateElement(node) {
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const token = sourceCode.getFirstToken(node);
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checkSpacingBefore(token);
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checkSpacingAfter(token);
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}
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};
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}
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};
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