Dive into secure and efficient coding practices with our curated list of the top 10 examples showcasing 'vlq' in functional components in JavaScript. Our advanced machine learning engine meticulously scans each line of code, cross-referencing millions of open source libraries to ensure your implementation is not just functional, but also robust and secure. Elevate your React applications to new heights by mastering the art of handling side effects, API calls, and asynchronous operations with confidence and precision.
// => ',' separates mappings in a line
// decoded mapping => [ generatedCodeColumn, sourceFileIndex, sourceCodeLine, sourceCodeColumn, nameIndex ]
let sourceFileIndex = 0, // second field
sourceCodeLine = 0, // third field
sourceCodeColumn = 0; // fourth field
const lines = sourceMap.mappings.split(';');
for (let lineIndex = 0; lineIndex < lines.length; lineIndex++) {
// reset column position to 0 after each line
let generatedCodeColumn = 0;
// decode sections in line
const columns = lines[lineIndex].split(',');
for (let columnIndex = 0; columnIndex < columns.length; columnIndex++) {
const decodedSection = vlq.decode(columns[columnIndex]);
if (decodedSection.length >= 4) {
// update relative positions
generatedCodeColumn += decodedSection[0];
sourceFileIndex += decodedSection[1];
sourceCodeLine += decodedSection[2];
sourceCodeColumn += decodedSection[3];
}
// check if matching map
if (lineIndex === position.lineNumber) {
if (generatedCodeColumn === position.columnNumber) {
// matching column and line found
return new LogPosition(sourceMap.sources[sourceFileIndex], sourceCodeLine, sourceCodeColumn);
} else if (columnIndex + 1 === columns.length) {
// matching column not found, but line is correct
return new LogPosition(sourceMap.sources[sourceFileIndex], sourceCodeLine, 0);
let sourceRow = 1
// 文件列
let sourceColumn = 1
// 字段名
let sourceNameIndex = 0
for (let i = 0, len = lines.length; i < len; i++) {
let line = lines[i]
if (!line) {
continue
}
tempResult = result[i + 1] = {}
transformedColumn = 1
let arr = line.split(',')
for (let j = 0, len1 = arr.length; j < len1; j++) {
let ret = vlq.decode(arr[j])
let info = {}
transformedColumn += ret[0]
if (ret[1] !== undefined) {
sourceIndex += ret[1]
sourceRow += ret[2]
sourceColumn += ret[3]
info.sourceIndex = sourceIndex
info.row = sourceRow
info.column = sourceColumn
if (ret[4] !== undefined) {
sourceNameIndex += ret[4]
info.name = object.names[sourceNameIndex]
}
// assign info
tempResult[transformedColumn] = info
}
line => { return line.split(',').map(seg => vlq.decode(seg)); });
}
function decodeFunctionMap(
functionMap: ?FBSourceFunctionMap,
): $ReadOnlyArray {
if (!functionMap) {
return [];
}
const parsed = [];
let line = 1;
let nameIndex = 0;
for (const lineMappings of functionMap.mappings.split(';')) {
let column = 0;
for (const mapping of lineMappings.split(',')) {
const [columnDelta, nameDelta, lineDelta = 0] = vlq.decode(mapping);
line += lineDelta;
nameIndex += nameDelta;
column += columnDelta;
parsed.push({line, column, name: functionMap.names[nameIndex]});
}
}
return parsed;
}
function decodeFunctionMap(
functionMap: ?FBSourceFunctionMap,
): $ReadOnlyArray {
if (!functionMap) {
return [];
}
const parsed = [];
let line = 1;
let nameIndex = 0;
for (const lineMappings of functionMap.mappings.split(';')) {
let column = 0;
for (const mapping of lineMappings.split(',')) {
const [columnDelta, nameDelta, lineDelta = 0] = vlq.decode(mapping);
line += lineDelta;
nameIndex += nameDelta;
column += columnDelta;
parsed.push({line, column, name: functionMap.names[nameIndex]});
}
}
return parsed;
}
segment[1] - offsets.sourceIndex,
segment[2] - offsets.sourceCodeLine,
segment[3] - offsets.sourceCodeColumn
];
generatedCodeColumn = segment[0];
offsets.sourceIndex = segment[1];
offsets.sourceCodeLine = segment[2];
offsets.sourceCodeColumn = segment[3];
if ( ~segment[4] ) {
arr.push( segment[4] - offsets.sourceCodeName );
offsets.sourceCodeName = segment[4];
}
return encode( arr );
}).join( ',' );
}).join( ';' );
segment.sourceIndex - offsets.sourceIndex,
segment.sourceCodeLine - offsets.sourceCodeLine,
segment.sourceCodeColumn - offsets.sourceCodeColumn
];
generatedCodeColumn = segment.generatedCodeColumn;
offsets.sourceIndex = segment.sourceIndex;
offsets.sourceCodeLine = segment.sourceCodeLine;
offsets.sourceCodeColumn = segment.sourceCodeColumn;
if ( ~segment.sourceCodeName ) {
arr.push( segment.sourceCodeName - offsets.sourceCodeName );
offsets.sourceCodeName = segment.sourceCodeName;
}
return vlq.encode( arr );
}).join( ',' );
}).join( ';' );
var columnDiff = start.column - end.column;
if (lineDiff) {
for (var l = 0; l !== lineDiff; l++) {
mappings += ';';
}
mappings += vlq.encode([ start.column, 0, lineDiff, columnDiff ]);
} else if (columnDiff) {
if (i) {
mappings += ',';
}
mappings += vlq.encode([ columnDiff, 0, lineDiff, columnDiff ]);
}
end = removedNodes[i].loc.end;
mappings += ',';
mappings += vlq.encode([ 0, 0, end.line - start.line, end.column - start.column ]);
}
return mappings;
}
return i.map(function(j) {
return vlq.encode(j);
}).join(',');
}).join(';')
var mappings = '';
if (!removedNodes || removedNodes.length === '') {
return mappings;
}
var end = { line: 1, column: 0 };
for (var i = 0; i < removedNodes.length; i++) {
var start = removedNodes[i].loc.start;
var lineDiff = start.line - end.line;
var columnDiff = start.column - end.column;
if (lineDiff) {
for (var l = 0; l !== lineDiff; l++) {
mappings += ';';
}
mappings += vlq.encode([ start.column, 0, lineDiff, columnDiff ]);
} else if (columnDiff) {
if (i) {
mappings += ',';
}
mappings += vlq.encode([ columnDiff, 0, lineDiff, columnDiff ]);
}
end = removedNodes[i].loc.end;
mappings += ',';
mappings += vlq.encode([ 0, 0, end.line - start.line, end.column - start.column ]);
}
return mappings;
}