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fix re-use data between postcss listeners (#103) #107

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fix re-use data between postcss listeners (#103) #107

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137 changes: 75 additions & 62 deletions index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -6,12 +6,18 @@ const defaults = {
rootValue: 16,
unitPrecision: 5,
selectorBlackList: [],
propList: ["font", "font-size", "line-height", "letter-spacing", "word-spacing"],
propList: [
"font",
"font-size",
"line-height",
"letter-spacing",
"word-spacing"
],
replace: true,
mediaQuery: false,
minPixelValue: 0,
exclude: null,
unit: "px",
unit: "px"
};

const legacyOptions = {
Expand All @@ -20,7 +26,7 @@ const legacyOptions = {
selector_black_list: "selectorBlackList",
prop_white_list: "propList",
media_query: "mediaQuery",
propWhiteList: "propList",
propWhiteList: "propList"
};

function convertLegacyOptions(options) {
Expand All @@ -36,7 +42,7 @@ function convertLegacyOptions(options) {
delete options["prop_white_list"];
delete options.propWhiteList;
}
Object.keys(legacyOptions).forEach((key) => {
Object.keys(legacyOptions).forEach(key => {
if (Reflect.has(options, key)) {
options[legacyOptions[key]] = options[key];
delete options[key];
Expand All @@ -61,12 +67,12 @@ function toFixed(number, precision) {
}

function declarationExists(decls, prop, value) {
return decls.some((decl) => decl.prop === prop && decl.value === value);
return decls.some(decl => decl.prop === prop && decl.value === value);
}

function blacklistedSelector(blacklist, selector) {
if (typeof selector !== "string") return;
return blacklist.some((regex) => {
return blacklist.some(regex => {
if (typeof regex === "string") {
return selector.indexOf(regex) !== -1;
}
Expand All @@ -85,31 +91,31 @@ function createPropListMatcher(propList) {
notExact: filterPropList.notExact(propList),
notContain: filterPropList.notContain(propList),
notStartWith: filterPropList.notStartWith(propList),
notEndWith: filterPropList.notEndWith(propList),
notEndWith: filterPropList.notEndWith(propList)
};
return (prop) => {
return prop => {
if (matchAll) return true;
return (
(hasWild ||
lists.exact.indexOf(prop) > -1 ||
lists.contain.some(function (m) {
lists.contain.some(function(m) {
return prop.indexOf(m) > -1;
}) ||
lists.startWith.some(function (m) {
lists.startWith.some(function(m) {
return prop.indexOf(m) === 0;
}) ||
lists.endWith.some(function (m) {
lists.endWith.some(function(m) {
return prop.indexOf(m) === prop.length - m.length;
})) &&
!(
lists.notExact.indexOf(prop) > -1 ||
lists.notContain.some(function (m) {
lists.notContain.some(function(m) {
return prop.indexOf(m) > -1;
}) ||
lists.notStartWith.some(function (m) {
lists.notStartWith.some(function(m) {
return prop.indexOf(m) === 0;
}) ||
lists.notEndWith.some(function (m) {
lists.notEndWith.some(function(m) {
return prop.indexOf(m) === prop.length - m.length;
})
)
Expand All @@ -122,62 +128,69 @@ module.exports = (options = {}) => {
const opts = Object.assign({}, defaults, options);
const satisfyPropList = createPropListMatcher(opts.propList);
const exclude = opts.exclude;
let isExcludeFile = false;
let pxReplace;
return {
postcssPlugin: "postcss-pxtorem",
Once(css) {
const filePath = css.source.input.file;
if (
exclude &&
((type.isFunction(exclude) && exclude(filePath)) ||
(type.isString(exclude) && filePath.indexOf(exclude) !== -1) ||
filePath.match(exclude) !== null)
) {
isExcludeFile = true;
} else {
isExcludeFile = false;
}
prepare() {
let isExcludeFile = false;
let pxReplace;
return {
Once(css) {
const filePath = css.source.input.file;
if (
exclude &&
((type.isFunction(exclude) && exclude(filePath)) ||
(type.isString(exclude) && filePath.indexOf(exclude) !== -1) ||
filePath.match(exclude) !== null)
) {
isExcludeFile = true;
} else {
isExcludeFile = false;
}

const rootValue =
typeof opts.rootValue === "function"
? opts.rootValue(css.source.input)
: opts.rootValue;
pxReplace = createPxReplace(
rootValue,
opts.unitPrecision,
opts.minPixelValue,
);
},
Declaration(decl) {
if (isExcludeFile) return;
const rootValue =
typeof opts.rootValue === "function"
? opts.rootValue(css.source.input)
: opts.rootValue;
pxReplace = createPxReplace(
rootValue,
opts.unitPrecision,
opts.minPixelValue
);
},
Declaration(decl) {
if (isExcludeFile) return;

if (
decl.value.indexOf(opts.unit) === -1 ||
!satisfyPropList(decl.prop) ||
blacklistedSelector(opts.selectorBlackList, decl.parent.selector)
)
return;
if (
decl.value.indexOf(opts.unit) === -1 ||
!satisfyPropList(decl.prop) ||
blacklistedSelector(opts.selectorBlackList, decl.parent.selector)
)
return;

const value = decl.value.replace(pxRegex(opts.unit), pxReplace);
const value = decl.value.replace(pxRegex(opts.unit), pxReplace);

// if rem unit already exists, do not add or replace
if (declarationExists(decl.parent, decl.prop, value)) return;
// if rem unit already exists, do not add or replace
if (declarationExists(decl.parent, decl.prop, value)) return;

if (opts.replace) {
decl.value = value;
} else {
decl.cloneAfter({ value: value });
}
},
AtRule(atRule) {
if (isExcludeFile) return;
if (opts.replace) {
decl.value = value;
} else {
decl.cloneAfter({ value: value });
}
},
AtRule(atRule) {
if (isExcludeFile) return;

if (opts.mediaQuery && atRule.name === "media") {
if (atRule.params.indexOf(opts.unit) === -1) return;
atRule.params = atRule.params.replace(pxRegex(opts.unit), pxReplace);
}
},
if (opts.mediaQuery && atRule.name === "media") {
if (atRule.params.indexOf(opts.unit) === -1) return;
atRule.params = atRule.params.replace(
pxRegex(opts.unit),
pxReplace
);
}
}
};
}
};
};
module.exports.postcss = true;