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Update custom rule params.config object to be a copy of the configuration object to prevent modification of user data by custom rule, add test case to validate config.params value for custom rules in different scenarios.

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David Anson 2025-09-21 15:25:25 -07:00
parent 0916e25c27
commit c07a63117a
2 changed files with 58 additions and 22 deletions
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2
lib/markdownlint.mjs
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@ -545,7 +545,7 @@ function lintContent(
...paramsBase,
...tokens,
parsers,
"config": effectiveConfig[ruleName]
"config": (typeof effectiveConfig[ruleName] === "object") ? { ...effectiveConfig[ruleName] } : effectiveConfig[ruleName]
};
// eslint-disable-next-line jsdoc/require-jsdoc
function throwError(property) {

78
test/markdownlint-test-custom-rules.mjs
View file

@ -2016,7 +2016,7 @@ test("customRulesParamsAreFrozen", (t) => {
});
test("customRulesParamsAreStable", (t) => {
t.plan(4);
t.plan(6);
const config1 = { "value1": 10 };
const config2 = { "value2": 20 };
/** @type {import("markdownlint").Options} */
@ -2038,17 +2038,10 @@ test("customRulesParamsAreStable", (t) => {
"function":
(params) => {
const { config } = params;
t.deepEqual(
config,
config1,
`Unexpected config in sync path: ${config}.`
);
t.deepEqual(config, config1, `Unexpected config in sync path: ${config}.`);
return Promise.resolve().then(() => {
t.deepEqual(
config,
config1,
`Unexpected config in async path: ${config}.`
);
t.deepEqual(config, config1, `Unexpected config in async path: ${config}.`);
config.extra = 1;
});
}
},
@ -2061,17 +2054,10 @@ test("customRulesParamsAreStable", (t) => {
"function":
(params) => {
const { config } = params;
t.deepEqual(
config,
config2,
`Unexpected config in sync path: ${config}.`
);
t.deepEqual(config, config2, `Unexpected config in sync path: ${config}.`);
return Promise.resolve().then(() => {
t.deepEqual(
config,
config2,
`Unexpected config in async path: ${config}.`
);
t.deepEqual(config, config2, `Unexpected config in async path: ${config}.`);
config.extra = 2;
});
}
}
@ -2080,6 +2066,56 @@ test("customRulesParamsAreStable", (t) => {
"string": "# Heading"
}
};
return lintPromise(options).then(() => {
t.deepEqual(config1, { "value1": 10 });
t.deepEqual(config2, { "value2": 20 });
});
});
test("customRulesParamsAreExpected", (t) => {
t.plan(4);
/** @type {import("markdownlint").Options} */
const options = {
"config": {
// "name1" default enabled
"name2": true,
"name3": {},
"name4": { "value": 10 }
},
"customRules": [
{
"names": [ "name1" ],
"description": "description",
"tags": [ "tag" ],
"parser": "none",
"function": (params) => t.deepEqual(params.config, true)
},
{
"names": [ "name2" ],
"description": "description",
"tags": [ "tag" ],
"parser": "none",
"function": (params) => t.deepEqual(params.config, {})
},
{
"names": [ "name3" ],
"description": "description",
"tags": [ "tag" ],
"parser": "none",
"function": (params) => t.deepEqual(params.config, {})
},
{
"names": [ "name4" ],
"description": "description",
"tags": [ "tag" ],
"parser": "none",
"function": (params) => t.deepEqual(params.config, { "value": 10 })
}
],
"strings": {
"string": "# Heading"
}
};
return lintPromise(options);
});