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Improve warnings checks #75

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Improve warnings checks #75

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26ef7b0
simplify NODE_ENV check for logWarnings
FrancescoCioria Jan 24, 2019
526e829
improve warning checks
FrancescoCioria Jan 24, 2019
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133 changes: 60 additions & 73 deletions src/FlexView.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -10,11 +10,6 @@ export type Overwrite<O1, O2> = Pick<O1, Exclude<keyof O1, keyof O2>> & O2;

declare var process: { env: { NODE_ENV: "production" | "development" } };

function warn(warning: string): void {
if (process.env.NODE_ENV !== "production") {
console.warn(warning); // eslint-disable-line no-console
}
}
export namespace FlexView {
export type Props = Overwrite<
Omit<React.HTMLProps<HTMLDivElement>, "ref">,
Expand Down Expand Up @@ -81,81 +76,73 @@ export class FlexView extends React.Component<FlexView.Props> {
}

logWarnings(): void {
const {
basis,
shrink,
grow,
hAlignContent,
vAlignContent,
children,
column
} = this.props;

if (basis === "auto") {
warn(
'basis is "auto" by default: forcing it to "auto" will leave "shrink:true" as default'
);
}
if (process.env.NODE_ENV !== "production") {
const {
basis,
shrink,
grow,
hAlignContent,
vAlignContent,
column
} = this.props;

if (basis === "auto") {
console.warn(
'basis is "auto" by default: forcing it to "auto" will leave "shrink:true" as default'
);
}

if (
(shrink === false || shrink === 0) &&
(grow === true || (typeof grow === "number" && grow > 0))
) {
warn('passing both "grow" and "shrink={false}" is a no-op!');
}
if (
(shrink === false || shrink === 0) &&
(grow === true || (typeof grow === "number" && grow > 0))
) {
console.warn('passing both "grow" and "shrink={false}" is a no-op!');
}

if (
process.env.NODE_ENV !== "production" &&
typeof children !== "undefined" &&
!column &&
hAlignContent === "center"
) {
const atLeastOneChildHasHMarginAuto = some(
[].concat(children as any),
(child: any) => {
const props =
(typeof child === "object" && child !== null
? child.props
: undefined) || {};
const style = props.style || {};

const marginLeft = style.marginLeft || props.marginLeft;
const marginRight = style.marginRight || props.marginRight;
const children: Array<
| React.ReactElement<
{ [k: string]: any } & { style?: React.CSSProperties }
>
| React.ReactText
> = React.Children.toArray(this.props.children);

if (!column && hAlignContent === "center") {
const atLeastOneChildHasHMarginAuto = some(children, child => {
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not related, and not sure about our current browser support target here, but this could easily be rewritten using Array.prototype.some and maybe drop some kB from the package?

if (typeof child !== "object") {
return false;
}

const style = child.props.style || {};

const marginLeft = style.marginLeft || child.props.marginLeft;
const marginRight = style.marginRight || child.props.marginRight;
return marginLeft === "auto" && marginRight === "auto";
}
);
});

atLeastOneChildHasHMarginAuto &&
warn(
'In a row with hAlignContent="center" there should be no child with marginLeft and marginRight set to "auto"\nhttps://github.com/buildo/react-flexview/issues/30'
);
}
atLeastOneChildHasHMarginAuto &&
console.warn(
'In a row with hAlignContent="center" there should be no child with marginLeft and marginRight set to "auto"\nhttps://github.com/buildo/react-flexview/issues/30'
);
}

if (
process.env.NODE_ENV !== "production" &&
typeof children !== "undefined" &&
column &&
vAlignContent === "center"
) {
const atLeastOneChildHasVMarginAuto = some(
[].concat(children as any),
(child: any) => {
const props =
(typeof child === "object" && child !== null
? child.props
: undefined) || {};
const style = props.style || {};

const marginTop = style.marginTop || props.marginTop;
const marginBottom = style.marginBottom || props.marginBottom;
if (column && vAlignContent === "center") {
const atLeastOneChildHasVMarginAuto = some(children, child => {
if (typeof child !== "object") {
return false;
}

const style = child.props.style || {};

const marginTop = style.marginTop || child.props.marginTop;
const marginBottom = style.marginBottom || child.props.marginBottom;
return marginTop === "auto" && marginBottom === "auto";
}
);
});

atLeastOneChildHasVMarginAuto &&
warn(
'In a column with vAlignContent="center" there should be no child with marginTop and marginBottom set to "auto"\nhttps://github.com/buildo/react-flexview/issues/30'
);
atLeastOneChildHasVMarginAuto &&
console.warn(
'In a column with vAlignContent="center" there should be no child with marginTop and marginBottom set to "auto"\nhttps://github.com/buildo/react-flexview/issues/30'
);
}
}
}

Expand Down