25 lines
1002 B
TypeScript
25 lines
1002 B
TypeScript
import * as React from 'react';
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import * as HighLight from 'react-highlight';
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export interface MarkdownCodeBlockProps {
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value: string;
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language: string;
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}
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export interface MarkdownCodeBlockState {}
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export class MarkdownCodeBlock extends React.Component<MarkdownCodeBlockProps, MarkdownCodeBlockState> {
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// Re-rendering a codeblock causes any use selection to become de-selected. This is annoying when trying
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// to copy-paste code examples. We therefore noop re-renders on this component if it's props haven't changed.
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public shouldComponentUpdate(nextProps: MarkdownCodeBlockProps, _nextState: MarkdownCodeBlockState): boolean {
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return nextProps.value !== this.props.value || nextProps.language !== this.props.language;
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}
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public render(): React.ReactNode {
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return (
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<span style={{ fontSize: 14 }}>
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<HighLight className={this.props.language || 'javascript'}>{this.props.value}</HighLight>
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</span>
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);
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}
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}
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